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

7x - 1, 9x + 5 এবং 8x + 1, x = 3 হলে চতুর্থ সমানুপাতিক নির্ণয় করুন।

1
50
2
30
3
60
4
40
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