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Finding the Fourth Proportional to 18,844.22, 28,251.27 and 9,479.41

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Solution

The fourth proportional to 18,844.22, 28,251.27 and 9,479.41 is: 14,211.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,844.22 : 28,251.27 = 9,479.41 : x
  2. Step 2: Convert to fraction form
    18,844.22/28,251.27 = 9,479.41/x
  3. Step 3: Cross multiply
    18,844.22x = 28,251.27 × 9,479.41
  4. Step 4: Simplify right side
    18,844.22x = 267,805,300.72
  5. Step 5: Solve for x
    x = 267,805,300.72/18,844.22
  6. Step 6: Final answer
    x = 14,211.53

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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.