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Finding the Third Proportional to 733 and 1,978

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Solution

The third proportional to 733 and 1,978 is: 5,337.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    733 : 1,978 = 1,978 : x
  2. Step 2: Convert to fraction form
    733/1,978 = 1,978/x
  3. Step 3: Cross multiply
    733x = 1,978 × 1,978
  4. Step 4: Simplify right side
    733x = 3,912,484
  5. Step 5: Solve for x
    x = 3,912,484/733
  6. Step 6: Final answer
    x = 5,337.63

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Why These Related Problems?

These problems maintain the same ratio (2.70) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.