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Finding the Fourth Proportional to 394,680.82, 544,651.41 and 215,832.82

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Solution

The fourth proportional to 394,680.82, 544,651.41 and 215,832.82 is: 297,844.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,680.82 : 544,651.41 = 215,832.82 : x
  2. Step 2: Convert to fraction form
    394,680.82/544,651.41 = 215,832.82/x
  3. Step 3: Cross multiply
    394,680.82x = 544,651.41 × 215,832.82
  4. Step 4: Simplify right side
    394,680.82x = 117,553,649,737.28
  5. Step 5: Solve for x
    x = 117,553,649,737.28/394,680.82
  6. Step 6: Final answer
    x = 297,844.85

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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.