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Finding the Third Proportional to 7,188 and 9,666

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Solution

The third proportional to 7,188 and 9,666 is: 12,998.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,188 : 9,666 = 9,666 : x
  2. Step 2: Convert to fraction form
    7,188/9,666 = 9,666/x
  3. Step 3: Cross multiply
    7,188x = 9,666 × 9,666
  4. Step 4: Simplify right side
    7,188x = 93,431,556
  5. Step 5: Solve for x
    x = 93,431,556/7,188
  6. Step 6: Final answer
    x = 12,998.27

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Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.