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Finding the Third Proportional to 3,948 and 8,632

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Solution

The third proportional to 3,948 and 8,632 is: 18,873.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,948 : 8,632 = 8,632 : x
  2. Step 2: Convert to fraction form
    3,948/8,632 = 8,632/x
  3. Step 3: Cross multiply
    3,948x = 8,632 × 8,632
  4. Step 4: Simplify right side
    3,948x = 74,511,424
  5. Step 5: Solve for x
    x = 74,511,424/3,948
  6. Step 6: Final answer
    x = 18,873.21

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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.