Scifi, Think of a "configuration" as not including a specific speed or power setting. "Configuration" is flap setting (in degrees on a Cessna, not "stages"), landing gear is already down for you, the prop is probably already fine, and you're not worrying about cowl flaps. With the configuration set, you're approaching the stall as the flight manual says: Slow deceleration. If you are maintaining the speed (75 knots is way too fast), to approach stall, you'll have to cause a change in something else, like increasing G. This is a massive deviation from a landing configuration type of flying.
A 172 will stall delightfully with any flap setting, and within 45 degrees of wings level, if approached with steady flight and slow deceleration. Yes, huge variations in power setting may also be used, and it is good to be familiar with the differences in how this affects a stall, however, I suggest that you perfect this all at low or no power first, and with your good technique refined, then start to repeat with greater power settings.
Early in section 5 of the later 172 flight manual, you will find the stall speed per flap setting and angle of bank. 75KIAS does not appear for any approved combination of these variables, so one could assume that you cannot safely make the 172 stall with any flap setting and 60 degrees bank.
I am relaxed with the idea that in general, 172s, like many other GA types, are stalled in landing configuration, mere inches above the runway, during landings.