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Finding the Fourth Proportional to 124,021.62, 171,149.61 and 67,432.86

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Solution

The fourth proportional to 124,021.62, 171,149.61 and 67,432.86 is: 93,057.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,021.62 : 171,149.61 = 67,432.86 : x
  2. Step 2: Convert to fraction form
    124,021.62/171,149.61 = 67,432.86/x
  3. Step 3: Cross multiply
    124,021.62x = 171,149.61 × 67,432.86
  4. Step 4: Simplify right side
    124,021.62x = 11,541,107,690.18
  5. Step 5: Solve for x
    x = 11,541,107,690.18/124,021.62
  6. Step 6: Final answer
    x = 93,057.22

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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.