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Finding the Third Proportional to 18,872 and 41,020

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Solution

The third proportional to 18,872 and 41,020 is: 89,160.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,872 : 41,020 = 41,020 : x
  2. Step 2: Convert to fraction form
    18,872/41,020 = 41,020/x
  3. Step 3: Cross multiply
    18,872x = 41,020 × 41,020
  4. Step 4: Simplify right side
    18,872x = 1,682,640,400
  5. Step 5: Solve for x
    x = 1,682,640,400/18,872
  6. Step 6: Final answer
    x = 89,160.68

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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.