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Finding the Third Proportional to 7,686.50 and 16,291

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Solution

The third proportional to 7,686.50 and 16,291 is: 34,527.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,686.50 : 16,291 = 16,291 : x
  2. Step 2: Convert to fraction form
    7,686.50/16,291 = 16,291/x
  3. Step 3: Cross multiply
    7,686.50x = 16,291 × 16,291
  4. Step 4: Simplify right side
    7,686.50x = 265,396,681
  5. Step 5: Solve for x
    x = 265,396,681/7,686.50
  6. Step 6: Final answer
    x = 34,527.64

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.