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What is the ratio of the mean proportional between 4.5 and 0.5, and the third proportional to 4.5 and 9.0?
4.5 और 0.5 के मध्यानुपाती और 4.5 और 9.0 के तृतीय समानुपाती में क्या अनुपात है ?

A

`3 :8`

B

`2:9`

C

`1 :6`

D

`1:12`

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