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Finding the Fourth Proportional to 198,832.86, 298,249.29 and 72,482.58

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Solution

The fourth proportional to 198,832.86, 298,249.29 and 72,482.58 is: 108,723.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,832.86 : 298,249.29 = 72,482.58 : x
  2. Step 2: Convert to fraction form
    198,832.86/298,249.29 = 72,482.58/x
  3. Step 3: Cross multiply
    198,832.86x = 298,249.29 × 72,482.58
  4. Step 4: Simplify right side
    198,832.86x = 21,617,878,022.37
  5. Step 5: Solve for x
    x = 21,617,878,022.37/198,832.86
  6. Step 6: Final answer
    x = 108,723.87

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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.