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Finding the Fourth Proportional to 57,607.20, 86,281.20 and 34,279.20

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Solution

The fourth proportional to 57,607.20, 86,281.20 and 34,279.20 is: 51,341.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,607.20 : 86,281.20 = 34,279.20 : x
  2. Step 2: Convert to fraction form
    57,607.20/86,281.20 = 34,279.20/x
  3. Step 3: Cross multiply
    57,607.20x = 86,281.20 × 34,279.20
  4. Step 4: Simplify right side
    57,607.20x = 2,957,650,511.04
  5. Step 5: Solve for x
    x = 2,957,650,511.04/57,607.20
  6. Step 6: Final answer
    x = 51,341.68

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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.