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Finding the Fourth Proportional to 141,892.20, 212,799.90 and 42,052.20

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Solution

The fourth proportional to 141,892.20, 212,799.90 and 42,052.20 is: 63,066.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,892.20 : 212,799.90 = 42,052.20 : x
  2. Step 2: Convert to fraction form
    141,892.20/212,799.90 = 42,052.20/x
  3. Step 3: Cross multiply
    141,892.20x = 212,799.90 × 42,052.20
  4. Step 4: Simplify right side
    141,892.20x = 8,948,703,954.78
  5. Step 5: Solve for x
    x = 8,948,703,954.78/141,892.20
  6. Step 6: Final answer
    x = 63,066.92

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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.