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Finding the Fourth Proportional to 55,651.74, 83,480.08 and 18,213.98

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Solution

The fourth proportional to 55,651.74, 83,480.08 and 18,213.98 is: 27,321.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,651.74 : 83,480.08 = 18,213.98 : x
  2. Step 2: Convert to fraction form
    55,651.74/83,480.08 = 18,213.98/x
  3. Step 3: Cross multiply
    55,651.74x = 83,480.08 × 18,213.98
  4. Step 4: Simplify right side
    55,651.74x = 1,520,504,507.52
  5. Step 5: Solve for x
    x = 1,520,504,507.52/55,651.74
  6. Step 6: Final answer
    x = 27,321.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.