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Finding the Fourth Proportional to 125,704.80, 173,469.78 and 68,343.30

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Solution

The fourth proportional to 125,704.80, 173,469.78 and 68,343.30 is: 94,312.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,704.80 : 173,469.78 = 68,343.30 : x
  2. Step 2: Convert to fraction form
    125,704.80/173,469.78 = 68,343.30/x
  3. Step 3: Cross multiply
    125,704.80x = 173,469.78 × 68,343.30
  4. Step 4: Simplify right side
    125,704.80x = 11,855,497,215.47
  5. Step 5: Solve for x
    x = 11,855,497,215.47/125,704.80
  6. Step 6: Final answer
    x = 94,312.21

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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.