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Finding the Third Proportional to 892 and 1,940

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Solution

The third proportional to 892 and 1,940 is: 4,219.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    892 : 1,940 = 1,940 : x
  2. Step 2: Convert to fraction form
    892/1,940 = 1,940/x
  3. Step 3: Cross multiply
    892x = 1,940 × 1,940
  4. Step 4: Simplify right side
    892x = 3,763,600
  5. Step 5: Solve for x
    x = 3,763,600/892
  6. Step 6: Final answer
    x = 4,219.28

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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.