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Finding the Third Proportional to 5,286 and 11,408

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Solution

The third proportional to 5,286 and 11,408 is: 24,620.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,286 : 11,408 = 11,408 : x
  2. Step 2: Convert to fraction form
    5,286/11,408 = 11,408/x
  3. Step 3: Cross multiply
    5,286x = 11,408 × 11,408
  4. Step 4: Simplify right side
    5,286x = 130,142,464
  5. Step 5: Solve for x
    x = 130,142,464/5,286
  6. Step 6: Final answer
    x = 24,620.22

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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.