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Finding the Third Proportional to 724 and 1,092

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Solution

The third proportional to 724 and 1,092 is: 1,647.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    724 : 1,092 = 1,092 : x
  2. Step 2: Convert to fraction form
    724/1,092 = 1,092/x
  3. Step 3: Cross multiply
    724x = 1,092 × 1,092
  4. Step 4: Simplify right side
    724x = 1,192,464
  5. Step 5: Solve for x
    x = 1,192,464/724
  6. Step 6: Final answer
    x = 1,647.05

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.