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Finding the Fourth Proportional to 394,405.60, 591,262.80 and 236,466.40

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Solution

The fourth proportional to 394,405.60, 591,262.80 and 236,466.40 is: 354,492.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,405.60 : 591,262.80 = 236,466.40 : x
  2. Step 2: Convert to fraction form
    394,405.60/591,262.80 = 236,466.40/x
  3. Step 3: Cross multiply
    394,405.60x = 591,262.80 × 236,466.40
  4. Step 4: Simplify right side
    394,405.60x = 139,813,785,769.92
  5. Step 5: Solve for x
    x = 139,813,785,769.92/394,405.60
  6. Step 6: Final answer
    x = 354,492.40

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