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Finding the Third Proportional to 7,666 and 15,811

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Solution

The third proportional to 7,666 and 15,811 is: 32,609.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,666 : 15,811 = 15,811 : x
  2. Step 2: Convert to fraction form
    7,666/15,811 = 15,811/x
  3. Step 3: Cross multiply
    7,666x = 15,811 × 15,811
  4. Step 4: Simplify right side
    7,666x = 249,987,721
  5. Step 5: Solve for x
    x = 249,987,721/7,666
  6. Step 6: Final answer
    x = 32,609.93

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Why These Related Problems?

These problems maintain the same ratio (2.06) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.