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Finding the Third Proportional to 3,171.75 and 4,508.13

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Solution

The third proportional to 3,171.75 and 4,508.13 is: 6,407.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,171.75 : 4,508.13 = 4,508.13 : x
  2. Step 2: Convert to fraction form
    3,171.75/4,508.13 = 4,508.13/x
  3. Step 3: Cross multiply
    3,171.75x = 4,508.13 × 4,508.13
  4. Step 4: Simplify right side
    3,171.75x = 20,323,191.02
  5. Step 5: Solve for x
    x = 20,323,191.02/3,171.75
  6. Step 6: Final answer
    x = 6,407.56

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.