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Finding the Fourth Proportional to 131,456.70, 197,253.90 and 60,400.80

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Solution

The fourth proportional to 131,456.70, 197,253.90 and 60,400.80 is: 90,632.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,456.70 : 197,253.90 = 60,400.80 : x
  2. Step 2: Convert to fraction form
    131,456.70/197,253.90 = 60,400.80/x
  3. Step 3: Cross multiply
    131,456.70x = 197,253.90 × 60,400.80
  4. Step 4: Simplify right side
    131,456.70x = 11,914,293,363.12
  5. Step 5: Solve for x
    x = 11,914,293,363.12/131,456.70
  6. Step 6: Final answer
    x = 90,632.83

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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.