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Finding the Third Proportional to 1,891 and 4,110

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Solution

The third proportional to 1,891 and 4,110 is: 8,932.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,891 : 4,110 = 4,110 : x
  2. Step 2: Convert to fraction form
    1,891/4,110 = 4,110/x
  3. Step 3: Cross multiply
    1,891x = 4,110 × 4,110
  4. Step 4: Simplify right side
    1,891x = 16,892,100
  5. Step 5: Solve for x
    x = 16,892,100/1,891
  6. Step 6: Final answer
    x = 8,932.89

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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.