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Finding the Third Proportional to 123 and 167.25

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Solution

The third proportional to 123 and 167.25 is: 227.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    123 : 167.25 = 167.25 : x
  2. Step 2: Convert to fraction form
    123/167.25 = 167.25/x
  3. Step 3: Cross multiply
    123x = 167.25 × 167.25
  4. Step 4: Simplify right side
    123x = 27,972.56
  5. Step 5: Solve for x
    x = 27,972.56/123
  6. Step 6: Final answer
    x = 227.42

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.