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Finding the Fourth Proportional to 74,158.38, 111,251.61 and 29,788.61

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Solution

The fourth proportional to 74,158.38, 111,251.61 and 29,788.61 is: 44,688.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,158.38 : 111,251.61 = 29,788.61 : x
  2. Step 2: Convert to fraction form
    74,158.38/111,251.61 = 29,788.61/x
  3. Step 3: Cross multiply
    74,158.38x = 111,251.61 × 29,788.61
  4. Step 4: Simplify right side
    74,158.38x = 3,314,030,265.90
  5. Step 5: Solve for x
    x = 3,314,030,265.90/74,158.38
  6. Step 6: Final answer
    x = 44,688.55

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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.