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Finding the Fourth Proportional to 82,944,092.80, 124,416,139.20 and 69,805,763.20

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Solution

The fourth proportional to 82,944,092.80, 124,416,139.20 and 69,805,763.20 is: 104,708,644.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,944,092.80 : 124,416,139.20 = 69,805,763.20 : x
  2. Step 2: Convert to fraction form
    82,944,092.80/124,416,139.20 = 69,805,763.20/x
  3. Step 3: Cross multiply
    82,944,092.80x = 124,416,139.20 × 69,805,763.20
  4. Step 4: Simplify right side
    82,944,092.80x = 8,684,963,551,253,438
  5. Step 5: Solve for x
    x = 8,684,963,551,253,438/82,944,092.80
  6. Step 6: Final answer
    x = 104,708,644.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.