A) 8.9
B) 56
C) 14
D) 17
Correct Answer: C
Solution :
| [c] Let the fourth proportional be x. |
| Then, \[\frac{0.12}{0.21}=\frac{8}{x}\] |
| \[\Rightarrow \] \[x=8\times \frac{0.21}{0.12}\] |
| \[\Rightarrow \] \[x=8\times \frac{21}{12}\]\[\Rightarrow \]\[x=14\] |
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