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Finding the Fourth Proportional to 101,672.20, 152,581.20 and 57,251.80

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Solution

The fourth proportional to 101,672.20, 152,581.20 and 57,251.80 is: 85,918.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,672.20 : 152,581.20 = 57,251.80 : x
  2. Step 2: Convert to fraction form
    101,672.20/152,581.20 = 57,251.80/x
  3. Step 3: Cross multiply
    101,672.20x = 152,581.20 × 57,251.80
  4. Step 4: Simplify right side
    101,672.20x = 8,735,548,346.16
  5. Step 5: Solve for x
    x = 8,735,548,346.16/101,672.20
  6. Step 6: Final answer
    x = 85,918.75

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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.