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Finding the Fourth Proportional to 198,992.80, 298,489.20 and 183,786.40

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Solution

The fourth proportional to 198,992.80, 298,489.20 and 183,786.40 is: 275,679.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,992.80 : 298,489.20 = 183,786.40 : x
  2. Step 2: Convert to fraction form
    198,992.80/298,489.20 = 183,786.40/x
  3. Step 3: Cross multiply
    198,992.80x = 298,489.20 × 183,786.40
  4. Step 4: Simplify right side
    198,992.80x = 54,858,255,506.88
  5. Step 5: Solve for x
    x = 54,858,255,506.88/198,992.80
  6. Step 6: Final answer
    x = 275,679.60

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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.