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Finding the Fourth Proportional to 198,999.60, 298,499.40 and 187,594.80

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Solution

The fourth proportional to 198,999.60, 298,499.40 and 187,594.80 is: 281,392.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,999.60 : 298,499.40 = 187,594.80 : x
  2. Step 2: Convert to fraction form
    198,999.60/298,499.40 = 187,594.80/x
  3. Step 3: Cross multiply
    198,999.60x = 298,499.40 × 187,594.80
  4. Step 4: Simplify right side
    198,999.60x = 55,996,935,243.12
  5. Step 5: Solve for x
    x = 55,996,935,243.12/198,999.60
  6. Step 6: Final answer
    x = 281,392.20

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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.