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If (x + 4), (x + 12), (x - 1), and (x + ...

If (x + 4), (x + 12), (x - 1), and (x + 5) are in proportion then the mean proportional between x and (x - 7)is:

A

9

B

16

C

15

D

12

Text Solution

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The correct Answer is:
D
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