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Finding the Third Proportional to 20,231.81 and 30,226.13

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Solution

The third proportional to 20,231.81 and 30,226.13 is: 45,157.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,231.81 : 30,226.13 = 30,226.13 : x
  2. Step 2: Convert to fraction form
    20,231.81/30,226.13 = 30,226.13/x
  3. Step 3: Cross multiply
    20,231.81x = 30,226.13 × 30,226.13
  4. Step 4: Simplify right side
    20,231.81x = 913,618,632.52
  5. Step 5: Solve for x
    x = 913,618,632.52/20,231.81
  6. Step 6: Final answer
    x = 45,157.53

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.