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Finding the Third Proportional to 5,165 and 11,130

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Solution

The third proportional to 5,165 and 11,130 is: 23,983.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,165 : 11,130 = 11,130 : x
  2. Step 2: Convert to fraction form
    5,165/11,130 = 11,130/x
  3. Step 3: Cross multiply
    5,165x = 11,130 × 11,130
  4. Step 4: Simplify right side
    5,165x = 123,876,900
  5. Step 5: Solve for x
    x = 123,876,900/5,165
  6. Step 6: Final answer
    x = 23,983.91

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.