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Finding the Third Proportional to 4,042.13 and 8,479.13

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Solution

The third proportional to 4,042.13 and 8,479.13 is: 17,786.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,042.13 : 8,479.13 = 8,479.13 : x
  2. Step 2: Convert to fraction form
    4,042.13/8,479.13 = 8,479.13/x
  3. Step 3: Cross multiply
    4,042.13x = 8,479.13 × 8,479.13
  4. Step 4: Simplify right side
    4,042.13x = 71,895,560.77
  5. Step 5: Solve for x
    x = 71,895,560.77/4,042.13
  6. Step 6: Final answer
    x = 17,786.58

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.