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Finding the Third Proportional to 4,192 and 9,112

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Solution

The third proportional to 4,192 and 9,112 is: 19,806.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,192 : 9,112 = 9,112 : x
  2. Step 2: Convert to fraction form
    4,192/9,112 = 9,112/x
  3. Step 3: Cross multiply
    4,192x = 9,112 × 9,112
  4. Step 4: Simplify right side
    4,192x = 83,028,544
  5. Step 5: Solve for x
    x = 83,028,544/4,192
  6. Step 6: Final answer
    x = 19,806.43

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.