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Finding the Third Proportional to 586 and 1,279

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Solution

The third proportional to 586 and 1,279 is: 2,791.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    586 : 1,279 = 1,279 : x
  2. Step 2: Convert to fraction form
    586/1,279 = 1,279/x
  3. Step 3: Cross multiply
    586x = 1,279 × 1,279
  4. Step 4: Simplify right side
    586x = 1,635,841
  5. Step 5: Solve for x
    x = 1,635,841/586
  6. Step 6: Final answer
    x = 2,791.54

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.