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Finding the Fourth Proportional to 125,672.40, 173,468.37 and 80,472.17

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Solution

The fourth proportional to 125,672.40, 173,468.37 and 80,472.17 is: 111,077.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,672.40 : 173,468.37 = 80,472.17 : x
  2. Step 2: Convert to fraction form
    125,672.40/173,468.37 = 80,472.17/x
  3. Step 3: Cross multiply
    125,672.40x = 173,468.37 × 80,472.17
  4. Step 4: Simplify right side
    125,672.40x = 13,959,375,292.92
  5. Step 5: Solve for x
    x = 13,959,375,292.92/125,672.40
  6. Step 6: Final answer
    x = 111,077.49

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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.