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Finding the Third Proportional to 3,785 and 6,742

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Solution

The third proportional to 3,785 and 6,742 is: 12,009.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,785 : 6,742 = 6,742 : x
  2. Step 2: Convert to fraction form
    3,785/6,742 = 6,742/x
  3. Step 3: Cross multiply
    3,785x = 6,742 × 6,742
  4. Step 4: Simplify right side
    3,785x = 45,454,564
  5. Step 5: Solve for x
    x = 45,454,564/3,785
  6. Step 6: Final answer
    x = 12,009.13

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Why These Related Problems?

These problems maintain the same ratio (1.78) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.