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Finding the Third Proportional to 20,389.50 and 41,325.75

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Solution

The third proportional to 20,389.50 and 41,325.75 is: 83,759.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,389.50 : 41,325.75 = 41,325.75 : x
  2. Step 2: Convert to fraction form
    20,389.50/41,325.75 = 41,325.75/x
  3. Step 3: Cross multiply
    20,389.50x = 41,325.75 × 41,325.75
  4. Step 4: Simplify right side
    20,389.50x = 1,707,817,613.06
  5. Step 5: Solve for x
    x = 1,707,817,613.06/20,389.50
  6. Step 6: Final answer
    x = 83,759.66

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Why These Related Problems?

These problems maintain the same ratio (2.03) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.