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Finding the Third Proportional to 169.13 and 372.38

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Solution

The third proportional to 169.13 and 372.38 is: 819.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    169.13 : 372.38 = 372.38 : x
  2. Step 2: Convert to fraction form
    169.13/372.38 = 372.38/x
  3. Step 3: Cross multiply
    169.13x = 372.38 × 372.38
  4. Step 4: Simplify right side
    169.13x = 138,663.14
  5. Step 5: Solve for x
    x = 138,663.14/169.13
  6. Step 6: Final answer
    x = 819.89

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.