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We have two geometric sequences of positive real numbers:
6,a,b and a,b,1296
Solve for a

 Oct 23, 2022
 #1
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You can combine these two, since the common ratio is the same.

 

6, a, b, 1296.

 

1296 = 6 x r^3

216 = r^3

r = 6

 

a = 6x6 = 36

 Oct 23, 2022

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