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Finding the Fourth Proportional to 198,406.86, 297,621.53 and 63,482.79

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Solution

The fourth proportional to 198,406.86, 297,621.53 and 63,482.79 is: 95,227.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,406.86 : 297,621.53 = 63,482.79 : x
  2. Step 2: Convert to fraction form
    198,406.86/297,621.53 = 63,482.79/x
  3. Step 3: Cross multiply
    198,406.86x = 297,621.53 × 63,482.79
  4. Step 4: Simplify right side
    198,406.86x = 18,893,844,771.05
  5. Step 5: Solve for x
    x = 18,893,844,771.05/198,406.86
  6. Step 6: Final answer
    x = 95,227.78

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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.