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Finding the Third Proportional to 16,188.75 and 18,861.75

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Solution

The third proportional to 16,188.75 and 18,861.75 is: 21,976.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,188.75 : 18,861.75 = 18,861.75 : x
  2. Step 2: Convert to fraction form
    16,188.75/18,861.75 = 18,861.75/x
  3. Step 3: Cross multiply
    16,188.75x = 18,861.75 × 18,861.75
  4. Step 4: Simplify right side
    16,188.75x = 355,765,613.06
  5. Step 5: Solve for x
    x = 355,765,613.06/16,188.75
  6. Step 6: Final answer
    x = 21,976.10

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Why These Related Problems?

These problems maintain the same ratio (1.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.