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Finding the Fourth Proportional to 394,436.61, 591,654.88 and 94,917.22

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Solution

The fourth proportional to 394,436.61, 591,654.88 and 94,917.22 is: 142,375.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,436.61 : 591,654.88 = 94,917.22 : x
  2. Step 2: Convert to fraction form
    394,436.61/591,654.88 = 94,917.22/x
  3. Step 3: Cross multiply
    394,436.61x = 591,654.88 × 94,917.22
  4. Step 4: Simplify right side
    394,436.61x = 56,158,236,409.03
  5. Step 5: Solve for x
    x = 56,158,236,409.03/394,436.61
  6. Step 6: Final answer
    x = 142,375.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.