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Finding the Fourth Proportional to 394,726.36, 544,689.45 and 222,634.84

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Solution

The fourth proportional to 394,726.36, 544,689.45 and 222,634.84 is: 307,217.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,726.36 : 544,689.45 = 222,634.84 : x
  2. Step 2: Convert to fraction form
    394,726.36/544,689.45 = 222,634.84/x
  3. Step 3: Cross multiply
    394,726.36x = 544,689.45 × 222,634.84
  4. Step 4: Simplify right side
    394,726.36x = 121,266,848,550.44
  5. Step 5: Solve for x
    x = 121,266,848,550.44/394,726.36
  6. Step 6: Final answer
    x = 307,217.51

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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.