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Finding the Third Proportional to 20,692.13 and 31,434.75

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Solution

The third proportional to 20,692.13 and 31,434.75 is: 47,754.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,692.13 : 31,434.75 = 31,434.75 : x
  2. Step 2: Convert to fraction form
    20,692.13/31,434.75 = 31,434.75/x
  3. Step 3: Cross multiply
    20,692.13x = 31,434.75 × 31,434.75
  4. Step 4: Simplify right side
    20,692.13x = 988,143,507.56
  5. Step 5: Solve for x
    x = 988,143,507.56/20,692.13
  6. Step 6: Final answer
    x = 47,754.57

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.