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Finding the Fourth Proportional to 18,555.24, 27,827.88 and 5,227.44

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Solution

The fourth proportional to 18,555.24, 27,827.88 and 5,227.44 is: 7,839.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,555.24 : 27,827.88 = 5,227.44 : x
  2. Step 2: Convert to fraction form
    18,555.24/27,827.88 = 5,227.44/x
  3. Step 3: Cross multiply
    18,555.24x = 27,827.88 × 5,227.44
  4. Step 4: Simplify right side
    18,555.24x = 145,468,573.03
  5. Step 5: Solve for x
    x = 145,468,573.03/18,555.24
  6. Step 6: Final answer
    x = 7,839.76

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1.5x scale

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.