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Finding the Third Proportional to 674.25 and 1,451

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Solution

The third proportional to 674.25 and 1,451 is: 3,122.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    674.25 : 1,451 = 1,451 : x
  2. Step 2: Convert to fraction form
    674.25/1,451 = 1,451/x
  3. Step 3: Cross multiply
    674.25x = 1,451 × 1,451
  4. Step 4: Simplify right side
    674.25x = 2,105,401
  5. Step 5: Solve for x
    x = 2,105,401/674.25
  6. Step 6: Final answer
    x = 3,122.58

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.