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Finding the Fourth Proportional to 394,571.13, 544,487.72 and 222,484.31

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Solution

The fourth proportional to 394,571.13, 544,487.72 and 222,484.31 is: 307,016.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,571.13 : 544,487.72 = 222,484.31 : x
  2. Step 2: Convert to fraction form
    394,571.13/544,487.72 = 222,484.31/x
  3. Step 3: Cross multiply
    394,571.13x = 544,487.72 × 222,484.31
  4. Step 4: Simplify right side
    394,571.13x = 121,139,970,852.81
  5. Step 5: Solve for x
    x = 121,139,970,852.81/394,571.13
  6. Step 6: Final answer
    x = 307,016.81

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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.