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Finding the Fourth Proportional to 117,229.20, 175,728.60 and 104,787.60

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Solution

The fourth proportional to 117,229.20, 175,728.60 and 104,787.60 is: 157,078.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,229.20 : 175,728.60 = 104,787.60 : x
  2. Step 2: Convert to fraction form
    117,229.20/175,728.60 = 104,787.60/x
  3. Step 3: Cross multiply
    117,229.20x = 175,728.60 × 104,787.60
  4. Step 4: Simplify right side
    117,229.20x = 18,414,178,245.36
  5. Step 5: Solve for x
    x = 18,414,178,245.36/117,229.20
  6. Step 6: Final answer
    x = 157,078.43

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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.