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Finding the Third Proportional to 3,766 and 8,172

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Solution

The third proportional to 3,766 and 8,172 is: 17,732.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,766 : 8,172 = 8,172 : x
  2. Step 2: Convert to fraction form
    3,766/8,172 = 8,172/x
  3. Step 3: Cross multiply
    3,766x = 8,172 × 8,172
  4. Step 4: Simplify right side
    3,766x = 66,781,584
  5. Step 5: Solve for x
    x = 66,781,584/3,766
  6. Step 6: Final answer
    x = 17,732.76

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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.