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Finding the Fourth Proportional to 83,420.28, 125,240.04 and 49,748.04

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Solution

The fourth proportional to 83,420.28, 125,240.04 and 49,748.04 is: 74,687.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,420.28 : 125,240.04 = 49,748.04 : x
  2. Step 2: Convert to fraction form
    83,420.28/125,240.04 = 49,748.04/x
  3. Step 3: Cross multiply
    83,420.28x = 125,240.04 × 49,748.04
  4. Step 4: Simplify right side
    83,420.28x = 6,230,446,519.52
  5. Step 5: Solve for x
    x = 6,230,446,519.52/83,420.28
  6. Step 6: Final answer
    x = 74,687.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.