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Finding the Fourth Proportional to 107,960.80, 161,876.40 and 55,472.80

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Solution

The fourth proportional to 107,960.80, 161,876.40 and 55,472.80 is: 83,175.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,960.80 : 161,876.40 = 55,472.80 : x
  2. Step 2: Convert to fraction form
    107,960.80/161,876.40 = 55,472.80/x
  3. Step 3: Cross multiply
    107,960.80x = 161,876.40 × 55,472.80
  4. Step 4: Simplify right side
    107,960.80x = 8,979,737,161.92
  5. Step 5: Solve for x
    x = 8,979,737,161.92/107,960.80
  6. Step 6: Final answer
    x = 83,175.90

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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.