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Finding the Third Proportional to 4,438 and 7,150

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Solution

The third proportional to 4,438 and 7,150 is: 11,519.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,438 : 7,150 = 7,150 : x
  2. Step 2: Convert to fraction form
    4,438/7,150 = 7,150/x
  3. Step 3: Cross multiply
    4,438x = 7,150 × 7,150
  4. Step 4: Simplify right side
    4,438x = 51,122,500
  5. Step 5: Solve for x
    x = 51,122,500/4,438
  6. Step 6: Final answer
    x = 11,519.27

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Why These Related Problems?

These problems maintain the same ratio (1.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.