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Finding the Third Proportional to 5,986.50 and 12,855

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Solution

The third proportional to 5,986.50 and 12,855 is: 27,603.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,986.50 : 12,855 = 12,855 : x
  2. Step 2: Convert to fraction form
    5,986.50/12,855 = 12,855/x
  3. Step 3: Cross multiply
    5,986.50x = 12,855 × 12,855
  4. Step 4: Simplify right side
    5,986.50x = 165,251,025
  5. Step 5: Solve for x
    x = 165,251,025/5,986.50
  6. Step 6: Final answer
    x = 27,603.95

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.