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Finding the Third Proportional to 3,351 and 5,112

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Solution

The third proportional to 3,351 and 5,112 is: 7,798.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,351 : 5,112 = 5,112 : x
  2. Step 2: Convert to fraction form
    3,351/5,112 = 5,112/x
  3. Step 3: Cross multiply
    3,351x = 5,112 × 5,112
  4. Step 4: Simplify right side
    3,351x = 26,132,544
  5. Step 5: Solve for x
    x = 26,132,544/3,351
  6. Step 6: Final answer
    x = 7,798.43

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.