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Finding the Third Proportional to 4,002 and 5,251

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Solution

The third proportional to 4,002 and 5,251 is: 6,889.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,002 : 5,251 = 5,251 : x
  2. Step 2: Convert to fraction form
    4,002/5,251 = 5,251/x
  3. Step 3: Cross multiply
    4,002x = 5,251 × 5,251
  4. Step 4: Simplify right side
    4,002x = 27,573,001
  5. Step 5: Solve for x
    x = 27,573,001/4,002
  6. Step 6: Final answer
    x = 6,889.81

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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.