railway RPF Constable Mock Test Series 2024 Quantitative Aptitude Ratio and Proportion Fourth Proportional

7x - 1, 9x + 5 ଏବଂ 8x + 1 ର ​ଚତୁର୍ଥ ସମାନୁପାତିକ ନିର୍ଣ୍ଣୟ କର, ଯଦି x = 3 ଅଟେ ।

1
50 
2
30 
3
60 
4
40 
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