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Finding the Third Proportional to 3,674 and 7,159

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Solution

The third proportional to 3,674 and 7,159 is: 13,949.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,674 : 7,159 = 7,159 : x
  2. Step 2: Convert to fraction form
    3,674/7,159 = 7,159/x
  3. Step 3: Cross multiply
    3,674x = 7,159 × 7,159
  4. Step 4: Simplify right side
    3,674x = 51,251,281
  5. Step 5: Solve for x
    x = 51,251,281/3,674
  6. Step 6: Final answer
    x = 13,949.72

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Why These Related Problems?

These problems maintain the same ratio (1.95) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.