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Finding the Third Proportional to 4,048 and 8,821

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Solution

The third proportional to 4,048 and 8,821 is: 19,221.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,048 : 8,821 = 8,821 : x
  2. Step 2: Convert to fraction form
    4,048/8,821 = 8,821/x
  3. Step 3: Cross multiply
    4,048x = 8,821 × 8,821
  4. Step 4: Simplify right side
    4,048x = 77,810,041
  5. Step 5: Solve for x
    x = 77,810,041/4,048
  6. Step 6: Final answer
    x = 19,221.85

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.