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Finding the Third Proportional to 3,922 and 5,861

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Solution

The third proportional to 3,922 and 5,861 is: 8,758.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,922 : 5,861 = 5,861 : x
  2. Step 2: Convert to fraction form
    3,922/5,861 = 5,861/x
  3. Step 3: Cross multiply
    3,922x = 5,861 × 5,861
  4. Step 4: Simplify right side
    3,922x = 34,351,321
  5. Step 5: Solve for x
    x = 34,351,321/3,922
  6. Step 6: Final answer
    x = 8,758.62

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.