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Finding the Fourth Proportional to 62,874.32, 86,765.12 and 34,580.48

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Solution

The fourth proportional to 62,874.32, 86,765.12 and 34,580.48 is: 47,720.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,874.32 : 86,765.12 = 34,580.48 : x
  2. Step 2: Convert to fraction form
    62,874.32/86,765.12 = 34,580.48/x
  3. Step 3: Cross multiply
    62,874.32x = 86,765.12 × 34,580.48
  4. Step 4: Simplify right side
    62,874.32x = 3,000,378,890.13
  5. Step 5: Solve for x
    x = 3,000,378,890.13/62,874.32
  6. Step 6: Final answer
    x = 47,720.26

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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.