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Finding the Fourth Proportional to 18,725.37, 28,092.10 and 5,578.80

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Solution

The fourth proportional to 18,725.37, 28,092.10 and 5,578.80 is: 8,369.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,725.37 : 28,092.10 = 5,578.80 : x
  2. Step 2: Convert to fraction form
    18,725.37/28,092.10 = 5,578.80/x
  3. Step 3: Cross multiply
    18,725.37x = 28,092.10 × 5,578.80
  4. Step 4: Simplify right side
    18,725.37x = 156,720,207.48
  5. Step 5: Solve for x
    x = 156,720,207.48/18,725.37
  6. Step 6: Final answer
    x = 8,369.41

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