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Finding the Third Proportional to 3,956 and 5,134

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Solution

The third proportional to 3,956 and 5,134 is: 6,662.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,956 : 5,134 = 5,134 : x
  2. Step 2: Convert to fraction form
    3,956/5,134 = 5,134/x
  3. Step 3: Cross multiply
    3,956x = 5,134 × 5,134
  4. Step 4: Simplify right side
    3,956x = 26,357,956
  5. Step 5: Solve for x
    x = 26,357,956/3,956
  6. Step 6: Final answer
    x = 6,662.78

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Why These Related Problems?

These problems maintain the same ratio (1.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.