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Finding the Fourth Proportional to 131,644.59, 197,287.90 and 55,679.96

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Solution

The fourth proportional to 131,644.59, 197,287.90 and 55,679.96 is: 83,444.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,644.59 : 197,287.90 = 55,679.96 : x
  2. Step 2: Convert to fraction form
    131,644.59/197,287.90 = 55,679.96/x
  3. Step 3: Cross multiply
    131,644.59x = 197,287.90 × 55,679.96
  4. Step 4: Simplify right side
    131,644.59x = 10,984,981,937.96
  5. Step 5: Solve for x
    x = 10,984,981,937.96/131,644.59
  6. Step 6: Final answer
    x = 83,444.23

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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.