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Finding the Fourth Proportional to 57,620.52, 86,430.76 and 13,844.52

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Solution

The fourth proportional to 57,620.52, 86,430.76 and 13,844.52 is: 20,766.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,620.52 : 86,430.76 = 13,844.52 : x
  2. Step 2: Convert to fraction form
    57,620.52/86,430.76 = 13,844.52/x
  3. Step 3: Cross multiply
    57,620.52x = 86,430.76 × 13,844.52
  4. Step 4: Simplify right side
    57,620.52x = 1,196,592,385.44
  5. Step 5: Solve for x
    x = 1,196,592,385.44/57,620.52
  6. Step 6: Final answer
    x = 20,766.78

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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.