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Finding the Fourth Proportional to 261,550.88, 392,329.96 and 74,562.38

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Solution

The fourth proportional to 261,550.88, 392,329.96 and 74,562.38 is: 111,844.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,550.88 : 392,329.96 = 74,562.38 : x
  2. Step 2: Convert to fraction form
    261,550.88/392,329.96 = 74,562.38/x
  3. Step 3: Cross multiply
    261,550.88x = 392,329.96 × 74,562.38
  4. Step 4: Simplify right side
    261,550.88x = 29,253,053,414.85
  5. Step 5: Solve for x
    x = 29,253,053,414.85/261,550.88
  6. Step 6: Final answer
    x = 111,844.60

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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.