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Finding the Fourth Proportional to 125,469.81, 173,159.91 and 71,744.13

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Solution

The fourth proportional to 125,469.81, 173,159.91 and 71,744.13 is: 99,013.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,469.81 : 173,159.91 = 71,744.13 : x
  2. Step 2: Convert to fraction form
    125,469.81/173,159.91 = 71,744.13/x
  3. Step 3: Cross multiply
    125,469.81x = 173,159.91 × 71,744.13
  4. Step 4: Simplify right side
    125,469.81x = 12,423,207,093.83
  5. Step 5: Solve for x
    x = 12,423,207,093.83/125,469.81
  6. Step 6: Final answer
    x = 99,013.52

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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.