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Finding the Fourth Proportional to 38,469.48, 57,695.31 and 12,169.32

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Solution

The fourth proportional to 38,469.48, 57,695.31 and 12,169.32 is: 18,251.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,469.48 : 57,695.31 = 12,169.32 : x
  2. Step 2: Convert to fraction form
    38,469.48/57,695.31 = 12,169.32/x
  3. Step 3: Cross multiply
    38,469.48x = 57,695.31 × 12,169.32
  4. Step 4: Simplify right side
    38,469.48x = 702,112,689.89
  5. Step 5: Solve for x
    x = 702,112,689.89/38,469.48
  6. Step 6: Final answer
    x = 18,251.16

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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.