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Finding the Third Proportional to 3,993.75 and 8,703

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Solution

The third proportional to 3,993.75 and 8,703 is: 18,965.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,993.75 : 8,703 = 8,703 : x
  2. Step 2: Convert to fraction form
    3,993.75/8,703 = 8,703/x
  3. Step 3: Cross multiply
    3,993.75x = 8,703 × 8,703
  4. Step 4: Simplify right side
    3,993.75x = 75,742,209
  5. Step 5: Solve for x
    x = 75,742,209/3,993.75
  6. Step 6: Final answer
    x = 18,965.19

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.