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Finding the Third Proportional to 12,616.50 and 19,794

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Solution

The third proportional to 12,616.50 and 19,794 is: 31,054.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,616.50 : 19,794 = 19,794 : x
  2. Step 2: Convert to fraction form
    12,616.50/19,794 = 19,794/x
  3. Step 3: Cross multiply
    12,616.50x = 19,794 × 19,794
  4. Step 4: Simplify right side
    12,616.50x = 391,802,436
  5. Step 5: Solve for x
    x = 391,802,436/12,616.50
  6. Step 6: Final answer
    x = 31,054.76

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.