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Finding the Third Proportional to 2,709 and 4,112

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Solution

The third proportional to 2,709 and 4,112 is: 6,241.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,709 : 4,112 = 4,112 : x
  2. Step 2: Convert to fraction form
    2,709/4,112 = 4,112/x
  3. Step 3: Cross multiply
    2,709x = 4,112 × 4,112
  4. Step 4: Simplify right side
    2,709x = 16,908,544
  5. Step 5: Solve for x
    x = 16,908,544/2,709
  6. Step 6: Final answer
    x = 6,241.62

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.