Finding the Fourth Proportional to 1,272,192.19, 1,755,638.78 and 691,415.31
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Solution
The fourth proportional to 1,272,192.19, 1,755,638.78 and 691,415.31 is: 954,160.50
Step by Step Solution
- Step 1: Write the proportion equation
1,272,192.19 : 1,755,638.78 = 691,415.31 : x - Step 2: Convert to fraction form
1,272,192.19/1,755,638.78 = 691,415.31/x - Step 3: Cross multiply
1,272,192.19x = 1,755,638.78 × 691,415.31 - Step 4: Simplify right side
1,272,192.19x = 1,213,875,531,321.72 - Step 5: Solve for x
x = 1,213,875,531,321.72/1,272,192.19 - Step 6: Final answer
x = 954,160.50
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.