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Finding the Third Proportional to 4,831 and 10,021

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Solution

The third proportional to 4,831 and 10,021 is: 20,786.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,831 : 10,021 = 10,021 : x
  2. Step 2: Convert to fraction form
    4,831/10,021 = 10,021/x
  3. Step 3: Cross multiply
    4,831x = 10,021 × 10,021
  4. Step 4: Simplify right side
    4,831x = 100,420,441
  5. Step 5: Solve for x
    x = 100,420,441/4,831
  6. Step 6: Final answer
    x = 20,786.68

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Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.