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Finding the Third Proportional to 10,721 and 16,149

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Solution

The third proportional to 10,721 and 16,149 is: 24,325.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,721 : 16,149 = 16,149 : x
  2. Step 2: Convert to fraction form
    10,721/16,149 = 16,149/x
  3. Step 3: Cross multiply
    10,721x = 16,149 × 16,149
  4. Step 4: Simplify right side
    10,721x = 260,790,201
  5. Step 5: Solve for x
    x = 260,790,201/10,721
  6. Step 6: Final answer
    x = 24,325.17

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.