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Finding the Fourth Proportional to 252,869.72, 379,304.46 and 75,372.20

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Solution

The fourth proportional to 252,869.72, 379,304.46 and 75,372.20 is: 113,058.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,869.72 : 379,304.46 = 75,372.20 : x
  2. Step 2: Convert to fraction form
    252,869.72/379,304.46 = 75,372.20/x
  3. Step 3: Cross multiply
    252,869.72x = 379,304.46 × 75,372.20
  4. Step 4: Simplify right side
    252,869.72x = 28,589,011,620.01
  5. Step 5: Solve for x
    x = 28,589,011,620.01/252,869.72
  6. Step 6: Final answer
    x = 113,058.26

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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.