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Finding the Third Proportional to 18,565.50 and 39,075

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Solution

The third proportional to 18,565.50 and 39,075 is: 82,241.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,565.50 : 39,075 = 39,075 : x
  2. Step 2: Convert to fraction form
    18,565.50/39,075 = 39,075/x
  3. Step 3: Cross multiply
    18,565.50x = 39,075 × 39,075
  4. Step 4: Simplify right side
    18,565.50x = 1,526,855,625
  5. Step 5: Solve for x
    x = 1,526,855,625/18,565.50
  6. Step 6: Final answer
    x = 82,241.56

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.