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Finding the Fourth Proportional to 224,511.20, 336,766.32 and 91,361.78

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Solution

The fourth proportional to 224,511.20, 336,766.32 and 91,361.78 is: 137,042.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    224,511.20 : 336,766.32 = 91,361.78 : x
  2. Step 2: Convert to fraction form
    224,511.20/336,766.32 = 91,361.78/x
  3. Step 3: Cross multiply
    224,511.20x = 336,766.32 × 91,361.78
  4. Step 4: Simplify right side
    224,511.20x = 30,767,570,439.25
  5. Step 5: Solve for x
    x = 30,767,570,439.25/224,511.20
  6. Step 6: Final answer
    x = 137,042.47

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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.