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Finding the Third Proportional to 3,247.75 and 6,978.13

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Solution

The third proportional to 3,247.75 and 6,978.13 is: 14,993.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,247.75 : 6,978.13 = 6,978.13 : x
  2. Step 2: Convert to fraction form
    3,247.75/6,978.13 = 6,978.13/x
  3. Step 3: Cross multiply
    3,247.75x = 6,978.13 × 6,978.13
  4. Step 4: Simplify right side
    3,247.75x = 48,694,228.52
  5. Step 5: Solve for x
    x = 48,694,228.52/3,247.75
  6. Step 6: Final answer
    x = 14,993.22

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.