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Finding the Third Proportional to 13,713.75 and 20,763

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Solution

The third proportional to 13,713.75 and 20,763 is: 31,435.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,713.75 : 20,763 = 20,763 : x
  2. Step 2: Convert to fraction form
    13,713.75/20,763 = 20,763/x
  3. Step 3: Cross multiply
    13,713.75x = 20,763 × 20,763
  4. Step 4: Simplify right side
    13,713.75x = 431,102,169
  5. Step 5: Solve for x
    x = 431,102,169/13,713.75
  6. Step 6: Final answer
    x = 31,435.76

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.