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Finding the Third Proportional to 3,996.75 and 8,786.63

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Solution

The third proportional to 3,996.75 and 8,786.63 is: 19,316.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,996.75 : 8,786.63 = 8,786.63 : x
  2. Step 2: Convert to fraction form
    3,996.75/8,786.63 = 8,786.63/x
  3. Step 3: Cross multiply
    3,996.75x = 8,786.63 × 8,786.63
  4. Step 4: Simplify right side
    3,996.75x = 77,204,778.89
  5. Step 5: Solve for x
    x = 77,204,778.89/3,996.75
  6. Step 6: Final answer
    x = 19,316.89

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.