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Finding the Fourth Proportional to 141,966.60, 212,949.90 and 42,117.90

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Solution

The fourth proportional to 141,966.60, 212,949.90 and 42,117.90 is: 63,176.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,966.60 : 212,949.90 = 42,117.90 : x
  2. Step 2: Convert to fraction form
    141,966.60/212,949.90 = 42,117.90/x
  3. Step 3: Cross multiply
    141,966.60x = 212,949.90 × 42,117.90
  4. Step 4: Simplify right side
    141,966.60x = 8,969,002,593.21
  5. Step 5: Solve for x
    x = 8,969,002,593.21/141,966.60
  6. Step 6: Final answer
    x = 63,176.85

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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.