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Finding the Fourth Proportional to 231,508.92, 347,371.44 and 81,862.56

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Solution

The fourth proportional to 231,508.92, 347,371.44 and 81,862.56 is: 122,832.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,508.92 : 347,371.44 = 81,862.56 : x
  2. Step 2: Convert to fraction form
    231,508.92/347,371.44 = 81,862.56/x
  3. Step 3: Cross multiply
    231,508.92x = 347,371.44 × 81,862.56
  4. Step 4: Simplify right side
    231,508.92x = 28,436,715,349.29
  5. Step 5: Solve for x
    x = 28,436,715,349.29/231,508.92
  6. Step 6: Final answer
    x = 122,832.05

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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.