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Finding the Third Proportional to 4,257 and 5,589

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Solution

The third proportional to 4,257 and 5,589 is: 7,337.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,257 : 5,589 = 5,589 : x
  2. Step 2: Convert to fraction form
    4,257/5,589 = 5,589/x
  3. Step 3: Cross multiply
    4,257x = 5,589 × 5,589
  4. Step 4: Simplify right side
    4,257x = 31,236,921
  5. Step 5: Solve for x
    x = 31,236,921/4,257
  6. Step 6: Final answer
    x = 7,337.78

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Why These Related Problems?

These problems maintain the same ratio (1.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.