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Finding the Third Proportional to 742.50 and 1,452

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Solution

The third proportional to 742.50 and 1,452 is: 2,839.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    742.50 : 1,452 = 1,452 : x
  2. Step 2: Convert to fraction form
    742.50/1,452 = 1,452/x
  3. Step 3: Cross multiply
    742.50x = 1,452 × 1,452
  4. Step 4: Simplify right side
    742.50x = 2,108,304
  5. Step 5: Solve for x
    x = 2,108,304/742.50
  6. Step 6: Final answer
    x = 2,839.47

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Why These Related Problems?

These problems maintain the same ratio (1.96) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.