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Finding the Third Proportional to 3,478 and 7,264

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Solution

The third proportional to 3,478 and 7,264 is: 15,171.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,478 : 7,264 = 7,264 : x
  2. Step 2: Convert to fraction form
    3,478/7,264 = 7,264/x
  3. Step 3: Cross multiply
    3,478x = 7,264 × 7,264
  4. Step 4: Simplify right side
    3,478x = 52,765,696
  5. Step 5: Solve for x
    x = 52,765,696/3,478
  6. Step 6: Final answer
    x = 15,171.28

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Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.