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Finding the Third Proportional to 5,179.50 and 7,767

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Solution

The third proportional to 5,179.50 and 7,767 is: 11,647.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,179.50 : 7,767 = 7,767 : x
  2. Step 2: Convert to fraction form
    5,179.50/7,767 = 7,767/x
  3. Step 3: Cross multiply
    5,179.50x = 7,767 × 7,767
  4. Step 4: Simplify right side
    5,179.50x = 60,326,289
  5. Step 5: Solve for x
    x = 60,326,289/5,179.50
  6. Step 6: Final answer
    x = 11,647.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.