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Finding the Third Proportional to 8,695.69 and 9,789.19

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Solution

The third proportional to 8,695.69 and 9,789.19 is: 11,020.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,695.69 : 9,789.19 = 9,789.19 : x
  2. Step 2: Convert to fraction form
    8,695.69/9,789.19 = 9,789.19/x
  3. Step 3: Cross multiply
    8,695.69x = 9,789.19 × 9,789.19
  4. Step 4: Simplify right side
    8,695.69x = 95,828,191.91
  5. Step 5: Solve for x
    x = 95,828,191.91/8,695.69
  6. Step 6: Final answer
    x = 11,020.20

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Why These Related Problems?

These problems maintain the same ratio (1.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.