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Finding the Fourth Proportional to 12,198.15, 18,289.80 and 4,793.74

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Solution

The fourth proportional to 12,198.15, 18,289.80 and 4,793.74 is: 7,187.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,198.15 : 18,289.80 = 4,793.74 : x
  2. Step 2: Convert to fraction form
    12,198.15/18,289.80 = 4,793.74/x
  3. Step 3: Cross multiply
    12,198.15x = 18,289.80 × 4,793.74
  4. Step 4: Simplify right side
    12,198.15x = 87,676,500.13
  5. Step 5: Solve for x
    x = 87,676,500.13/12,198.15
  6. Step 6: Final answer
    x = 7,187.69

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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.