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Finding the Third Proportional to 2,589 and 3,885

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Solution

The third proportional to 2,589 and 3,885 is: 5,829.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,589 : 3,885 = 3,885 : x
  2. Step 2: Convert to fraction form
    2,589/3,885 = 3,885/x
  3. Step 3: Cross multiply
    2,589x = 3,885 × 3,885
  4. Step 4: Simplify right side
    2,589x = 15,093,225
  5. Step 5: Solve for x
    x = 15,093,225/2,589
  6. Step 6: Final answer
    x = 5,829.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.