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Finding the Third Proportional to 3,791 and 4,187

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Solution

The third proportional to 3,791 and 4,187 is: 4,624.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,791 : 4,187 = 4,187 : x
  2. Step 2: Convert to fraction form
    3,791/4,187 = 4,187/x
  3. Step 3: Cross multiply
    3,791x = 4,187 × 4,187
  4. Step 4: Simplify right side
    3,791x = 17,530,969
  5. Step 5: Solve for x
    x = 17,530,969/3,791
  6. Step 6: Final answer
    x = 4,624.37

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Why These Related Problems?

These problems maintain the same ratio (1.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.