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Finding the Fourth Proportional to 198,793.20, 298,189.80 and 177,020.40

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Solution

The fourth proportional to 198,793.20, 298,189.80 and 177,020.40 is: 265,530.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,793.20 : 298,189.80 = 177,020.40 : x
  2. Step 2: Convert to fraction form
    198,793.20/298,189.80 = 177,020.40/x
  3. Step 3: Cross multiply
    198,793.20x = 298,189.80 × 177,020.40
  4. Step 4: Simplify right side
    198,793.20x = 52,785,677,671.92
  5. Step 5: Solve for x
    x = 52,785,677,671.92/198,793.20
  6. Step 6: Final answer
    x = 265,530.60

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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.