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Finding the Third Proportional to 20,623.50 and 40,923

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Solution

The third proportional to 20,623.50 and 40,923 is: 81,203.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,623.50 : 40,923 = 40,923 : x
  2. Step 2: Convert to fraction form
    20,623.50/40,923 = 40,923/x
  3. Step 3: Cross multiply
    20,623.50x = 40,923 × 40,923
  4. Step 4: Simplify right side
    20,623.50x = 1,674,691,929
  5. Step 5: Solve for x
    x = 1,674,691,929/20,623.50
  6. Step 6: Final answer
    x = 81,203.09

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Why These Related Problems?

These problems maintain the same ratio (1.98) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.