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Finding the Fourth Proportional to 125,600.72, 173,318.92 and 71,873.42

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Solution

The fourth proportional to 125,600.72, 173,318.92 and 71,873.42 is: 99,179.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,600.72 : 173,318.92 = 71,873.42 : x
  2. Step 2: Convert to fraction form
    125,600.72/173,318.92 = 71,873.42/x
  3. Step 3: Cross multiply
    125,600.72x = 173,318.92 × 71,873.42
  4. Step 4: Simplify right side
    125,600.72x = 12,457,023,531.11
  5. Step 5: Solve for x
    x = 12,457,023,531.11/125,600.72
  6. Step 6: Final answer
    x = 99,179.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.