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Finding the Third Proportional to 462.25 and 691.38

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Solution

The third proportional to 462.25 and 691.38 is: 1,034.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    462.25 : 691.38 = 691.38 : x
  2. Step 2: Convert to fraction form
    462.25/691.38 = 691.38/x
  3. Step 3: Cross multiply
    462.25x = 691.38 × 691.38
  4. Step 4: Simplify right side
    462.25x = 477,999.39
  5. Step 5: Solve for x
    x = 477,999.39/462.25
  6. Step 6: Final answer
    x = 1,034.07

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.