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Finding the Fourth Proportional to 198,516.40, 297,672.20 and 73,793.20

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Solution

The fourth proportional to 198,516.40, 297,672.20 and 73,793.20 is: 110,651.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,516.40 : 297,672.20 = 73,793.20 : x
  2. Step 2: Convert to fraction form
    198,516.40/297,672.20 = 73,793.20/x
  3. Step 3: Cross multiply
    198,516.40x = 297,672.20 × 73,793.20
  4. Step 4: Simplify right side
    198,516.40x = 21,966,184,189.04
  5. Step 5: Solve for x
    x = 21,966,184,189.04/198,516.40
  6. Step 6: Final answer
    x = 110,651.74

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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.