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Finding the Third Proportional to 3,408 and 7,481

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Solution

The third proportional to 3,408 and 7,481 is: 16,421.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,408 : 7,481 = 7,481 : x
  2. Step 2: Convert to fraction form
    3,408/7,481 = 7,481/x
  3. Step 3: Cross multiply
    3,408x = 7,481 × 7,481
  4. Step 4: Simplify right side
    3,408x = 55,965,361
  5. Step 5: Solve for x
    x = 55,965,361/3,408
  6. Step 6: Final answer
    x = 16,421.76

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.