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Finding the Fourth Proportional to 77,479,755.55, 106,929,615.02 and 57,866,593.29

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Solution

The fourth proportional to 77,479,755.55, 106,929,615.02 and 57,866,593.29 is: 79,861,539.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,479,755.55 : 106,929,615.02 = 57,866,593.29 : x
  2. Step 2: Convert to fraction form
    77,479,755.55/106,929,615.02 = 57,866,593.29/x
  3. Step 3: Cross multiply
    77,479,755.55x = 106,929,615.02 × 57,866,593.29
  4. Step 4: Simplify right side
    77,479,755.55x = 6,187,652,543,418,169
  5. Step 5: Solve for x
    x = 6,187,652,543,418,169/77,479,755.55
  6. Step 6: Final answer
    x = 79,861,539.31

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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.