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Finding the Third Proportional to 5,366 and 7,122

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Solution

The third proportional to 5,366 and 7,122 is: 9,452.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,366 : 7,122 = 7,122 : x
  2. Step 2: Convert to fraction form
    5,366/7,122 = 7,122/x
  3. Step 3: Cross multiply
    5,366x = 7,122 × 7,122
  4. Step 4: Simplify right side
    5,366x = 50,722,884
  5. Step 5: Solve for x
    x = 50,722,884/5,366
  6. Step 6: Final answer
    x = 9,452.64

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.