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Finding the Fourth Proportional to 67,231.92, 100,862.52 and 20,483.58

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Solution

The fourth proportional to 67,231.92, 100,862.52 and 20,483.58 is: 30,729.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,231.92 : 100,862.52 = 20,483.58 : x
  2. Step 2: Convert to fraction form
    67,231.92/100,862.52 = 20,483.58/x
  3. Step 3: Cross multiply
    67,231.92x = 100,862.52 × 20,483.58
  4. Step 4: Simplify right side
    67,231.92x = 2,066,025,497.42
  5. Step 5: Solve for x
    x = 2,066,025,497.42/67,231.92
  6. Step 6: Final answer
    x = 30,729.83

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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.