SOLUTION: Find the geometric mean of 7 and 63.

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Question 319657: Find the geometric mean of 7 and 63.

Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
l=ar^(n-1)
63=7r^2
r^2=63/7
r^2=9
r=sqrt9
r=3
7*3=21 ans.
7,21,63 has a ratio of 3 with a mean proportion of 21.