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Finding the Fourth Proportional to 394,778.52, 544,787.57 and 222,696.86

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Solution

The fourth proportional to 394,778.52, 544,787.57 and 222,696.86 is: 307,317.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,778.52 : 544,787.57 = 222,696.86 : x
  2. Step 2: Convert to fraction form
    394,778.52/544,787.57 = 222,696.86/x
  3. Step 3: Cross multiply
    394,778.52x = 544,787.57 × 222,696.86
  4. Step 4: Simplify right side
    394,778.52x = 121,322,479,038.83
  5. Step 5: Solve for x
    x = 121,322,479,038.83/394,778.52
  6. Step 6: Final answer
    x = 307,317.83

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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.