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Finding the Fourth Proportional to 125,246.49, 172,839.90 and 68,658.27

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Solution

The fourth proportional to 125,246.49, 172,839.90 and 68,658.27 is: 94,748.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,246.49 : 172,839.90 = 68,658.27 : x
  2. Step 2: Convert to fraction form
    125,246.49/172,839.90 = 68,658.27/x
  3. Step 3: Cross multiply
    125,246.49x = 172,839.90 × 68,658.27
  4. Step 4: Simplify right side
    125,246.49x = 11,866,888,520.97
  5. Step 5: Solve for x
    x = 11,866,888,520.97/125,246.49
  6. Step 6: Final answer
    x = 94,748.27

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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.