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Finding the Third Proportional to 5,613 and 12,189

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Solution

The third proportional to 5,613 and 12,189 is: 26,469.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,613 : 12,189 = 12,189 : x
  2. Step 2: Convert to fraction form
    5,613/12,189 = 12,189/x
  3. Step 3: Cross multiply
    5,613x = 12,189 × 12,189
  4. Step 4: Simplify right side
    5,613x = 148,571,721
  5. Step 5: Solve for x
    x = 148,571,721/5,613
  6. Step 6: Final answer
    x = 26,469.22

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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.