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Finding the Third Proportional to 8,472 and 18,694

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Solution

The third proportional to 8,472 and 18,694 is: 41,249.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,472 : 18,694 = 18,694 : x
  2. Step 2: Convert to fraction form
    8,472/18,694 = 18,694/x
  3. Step 3: Cross multiply
    8,472x = 18,694 × 18,694
  4. Step 4: Simplify right side
    8,472x = 349,465,636
  5. Step 5: Solve for x
    x = 349,465,636/8,472
  6. Step 6: Final answer
    x = 41,249.48

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Why These Related Problems?

These problems maintain the same ratio (2.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.