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Finding the Fourth Proportional to 87,595.71, 120,882.20 and 49,869.96

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Solution

The fourth proportional to 87,595.71, 120,882.20 and 49,869.96 is: 68,820.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,595.71 : 120,882.20 = 49,869.96 : x
  2. Step 2: Convert to fraction form
    87,595.71/120,882.20 = 49,869.96/x
  3. Step 3: Cross multiply
    87,595.71x = 120,882.20 × 49,869.96
  4. Step 4: Simplify right side
    87,595.71x = 6,028,390,229.36
  5. Step 5: Solve for x
    x = 6,028,390,229.36/87,595.71
  6. Step 6: Final answer
    x = 68,820.61

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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.