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Finding the Fourth Proportional to 125,644.72, 173,384.96 and 71,934.73

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Solution

The fourth proportional to 125,644.72, 173,384.96 and 71,934.73 is: 99,267.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,644.72 : 173,384.96 = 71,934.73 : x
  2. Step 2: Convert to fraction form
    125,644.72/173,384.96 = 71,934.73/x
  3. Step 3: Cross multiply
    125,644.72x = 173,384.96 × 71,934.73
  4. Step 4: Simplify right side
    125,644.72x = 12,472,399,923.99
  5. Step 5: Solve for x
    x = 12,472,399,923.99/125,644.72
  6. Step 6: Final answer
    x = 99,267.20

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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.