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Finding the Fourth Proportional to 198,998.44, 298,496.98 and 80,669.46

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Solution

The fourth proportional to 198,998.44, 298,496.98 and 80,669.46 is: 121,003.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,998.44 : 298,496.98 = 80,669.46 : x
  2. Step 2: Convert to fraction form
    198,998.44/298,496.98 = 80,669.46/x
  3. Step 3: Cross multiply
    198,998.44x = 298,496.98 × 80,669.46
  4. Step 4: Simplify right side
    198,998.44x = 24,079,590,188.23
  5. Step 5: Solve for x
    x = 24,079,590,188.23/198,998.44
  6. Step 6: Final answer
    x = 121,003.91

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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.