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Finding the Third Proportional to 5,408 and 11,760

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Solution

The third proportional to 5,408 and 11,760 is: 25,572.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,408 : 11,760 = 11,760 : x
  2. Step 2: Convert to fraction form
    5,408/11,760 = 11,760/x
  3. Step 3: Cross multiply
    5,408x = 11,760 × 11,760
  4. Step 4: Simplify right side
    5,408x = 138,297,600
  5. Step 5: Solve for x
    x = 138,297,600/5,408
  6. Step 6: Final answer
    x = 25,572.78

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.