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Finding the Third Proportional to 5,491 and 11,860

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Solution

The third proportional to 5,491 and 11,860 is: 25,616.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,491 : 11,860 = 11,860 : x
  2. Step 2: Convert to fraction form
    5,491/11,860 = 11,860/x
  3. Step 3: Cross multiply
    5,491x = 11,860 × 11,860
  4. Step 4: Simplify right side
    5,491x = 140,659,600
  5. Step 5: Solve for x
    x = 140,659,600/5,491
  6. Step 6: Final answer
    x = 25,616.39

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.