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Finding the Fourth Proportional to 125,201.88, 172,795.14 and 71,474.76

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Solution

The fourth proportional to 125,201.88, 172,795.14 and 71,474.76 is: 98,644.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,201.88 : 172,795.14 = 71,474.76 : x
  2. Step 2: Convert to fraction form
    125,201.88/172,795.14 = 71,474.76/x
  3. Step 3: Cross multiply
    125,201.88x = 172,795.14 × 71,474.76
  4. Step 4: Simplify right side
    125,201.88x = 12,350,491,160.67
  5. Step 5: Solve for x
    x = 12,350,491,160.67/125,201.88
  6. Step 6: Final answer
    x = 98,644.61

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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.