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Finding the Third Proportional to 5,532 and 7,879

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Solution

The third proportional to 5,532 and 7,879 is: 11,221.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,532 : 7,879 = 7,879 : x
  2. Step 2: Convert to fraction form
    5,532/7,879 = 7,879/x
  3. Step 3: Cross multiply
    5,532x = 7,879 × 7,879
  4. Step 4: Simplify right side
    5,532x = 62,078,641
  5. Step 5: Solve for x
    x = 62,078,641/5,532
  6. Step 6: Final answer
    x = 11,221.74

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.