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Finding the Fourth Proportional to 663,158.40, 994,773.12 and 189,912.96

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Solution

The fourth proportional to 663,158.40, 994,773.12 and 189,912.96 is: 284,879.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,158.40 : 994,773.12 = 189,912.96 : x
  2. Step 2: Convert to fraction form
    663,158.40/994,773.12 = 189,912.96/x
  3. Step 3: Cross multiply
    663,158.40x = 994,773.12 × 189,912.96
  4. Step 4: Simplify right side
    663,158.40x = 188,920,307,747.64
  5. Step 5: Solve for x
    x = 188,920,307,747.64/663,158.40
  6. Step 6: Final answer
    x = 284,879.61

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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.