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Finding the Fourth Proportional to 667,998.86, 921,896.73 and 366,251.18

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Solution

The fourth proportional to 667,998.86, 921,896.73 and 366,251.18 is: 505,458.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,998.86 : 921,896.73 = 366,251.18 : x
  2. Step 2: Convert to fraction form
    667,998.86/921,896.73 = 366,251.18/x
  3. Step 3: Cross multiply
    667,998.86x = 921,896.73 × 366,251.18
  4. Step 4: Simplify right side
    667,998.86x = 337,645,760,591.16
  5. Step 5: Solve for x
    x = 337,645,760,591.16/667,998.86
  6. Step 6: Final answer
    x = 505,458.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.