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Finding the Third Proportional to 3,981 and 5,568

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Solution

The third proportional to 3,981 and 5,568 is: 7,787.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,981 : 5,568 = 5,568 : x
  2. Step 2: Convert to fraction form
    3,981/5,568 = 5,568/x
  3. Step 3: Cross multiply
    3,981x = 5,568 × 5,568
  4. Step 4: Simplify right side
    3,981x = 31,002,624
  5. Step 5: Solve for x
    x = 31,002,624/3,981
  6. Step 6: Final answer
    x = 7,787.65

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.