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Finding the Third Proportional to 3,934 and 8,624

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Solution

The third proportional to 3,934 and 8,624 is: 18,905.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,934 : 8,624 = 8,624 : x
  2. Step 2: Convert to fraction form
    3,934/8,624 = 8,624/x
  3. Step 3: Cross multiply
    3,934x = 8,624 × 8,624
  4. Step 4: Simplify right side
    3,934x = 74,373,376
  5. Step 5: Solve for x
    x = 74,373,376/3,934
  6. Step 6: Final answer
    x = 18,905.28

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.