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Finding the Fourth Proportional to 18,392.75, 27,584.56 and 5,245.23

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Solution

The fourth proportional to 18,392.75, 27,584.56 and 5,245.23 is: 7,866.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,392.75 : 27,584.56 = 5,245.23 : x
  2. Step 2: Convert to fraction form
    18,392.75/27,584.56 = 5,245.23/x
  3. Step 3: Cross multiply
    18,392.75x = 27,584.56 × 5,245.23
  4. Step 4: Simplify right side
    18,392.75x = 144,687,361.65
  5. Step 5: Solve for x
    x = 144,687,361.65/18,392.75
  6. Step 6: Final answer
    x = 7,866.54

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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.