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Finding the Third Proportional to 6,991.50 and 13,173

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Solution

The third proportional to 6,991.50 and 13,173 is: 24,819.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,991.50 : 13,173 = 13,173 : x
  2. Step 2: Convert to fraction form
    6,991.50/13,173 = 13,173/x
  3. Step 3: Cross multiply
    6,991.50x = 13,173 × 13,173
  4. Step 4: Simplify right side
    6,991.50x = 173,527,929
  5. Step 5: Solve for x
    x = 173,527,929/6,991.50
  6. Step 6: Final answer
    x = 24,819.84

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Why These Related Problems?

These problems maintain the same ratio (1.88) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.