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Finding the Third Proportional to 3,693 and 8,112

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Solution

The third proportional to 3,693 and 8,112 is: 17,818.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,693 : 8,112 = 8,112 : x
  2. Step 2: Convert to fraction form
    3,693/8,112 = 8,112/x
  3. Step 3: Cross multiply
    3,693x = 8,112 × 8,112
  4. Step 4: Simplify right side
    3,693x = 65,804,544
  5. Step 5: Solve for x
    x = 65,804,544/3,693
  6. Step 6: Final answer
    x = 17,818.72

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.