Question 139304
I need to find the geometric means in the sequence 
180,____,5
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a(1) = 180
a(3) = 5
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a(3) = a*r^2
5 = 180r^2
r^2 = 5/180
r = sqrt(5/180)
r = 0.1666666667
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Cheers,
Stan H.