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Finding the Third Proportional to 2,861 and 6,279

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Solution

The third proportional to 2,861 and 6,279 is: 13,780.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,861 : 6,279 = 6,279 : x
  2. Step 2: Convert to fraction form
    2,861/6,279 = 6,279/x
  3. Step 3: Cross multiply
    2,861x = 6,279 × 6,279
  4. Step 4: Simplify right side
    2,861x = 39,425,841
  5. Step 5: Solve for x
    x = 39,425,841/2,861
  6. Step 6: Final answer
    x = 13,780.44

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.