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Finding the Third Proportional to 6,781 and 12,265.75

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Solution

The third proportional to 6,781 and 12,265.75 is: 22,186.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,781 : 12,265.75 = 12,265.75 : x
  2. Step 2: Convert to fraction form
    6,781/12,265.75 = 12,265.75/x
  3. Step 3: Cross multiply
    6,781x = 12,265.75 × 12,265.75
  4. Step 4: Simplify right side
    6,781x = 150,448,623.06
  5. Step 5: Solve for x
    x = 150,448,623.06/6,781
  6. Step 6: Final answer
    x = 22,186.79

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Why These Related Problems?

These problems maintain the same ratio (1.81) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.