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Finding the Third Proportional to 3,974 and 8,626

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Solution

The third proportional to 3,974 and 8,626 is: 18,723.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,974 : 8,626 = 8,626 : x
  2. Step 2: Convert to fraction form
    3,974/8,626 = 8,626/x
  3. Step 3: Cross multiply
    3,974x = 8,626 × 8,626
  4. Step 4: Simplify right side
    3,974x = 74,407,876
  5. Step 5: Solve for x
    x = 74,407,876/3,974
  6. Step 6: Final answer
    x = 18,723.67

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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.