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Finding the Fourth Proportional to 203,786.40, 305,679.60 and 195,621.60

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Solution

The fourth proportional to 203,786.40, 305,679.60 and 195,621.60 is: 293,432.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,786.40 : 305,679.60 = 195,621.60 : x
  2. Step 2: Convert to fraction form
    203,786.40/305,679.60 = 195,621.60/x
  3. Step 3: Cross multiply
    203,786.40x = 305,679.60 × 195,621.60
  4. Step 4: Simplify right side
    203,786.40x = 59,797,532,439.36
  5. Step 5: Solve for x
    x = 59,797,532,439.36/203,786.40
  6. Step 6: Final answer
    x = 293,432.40

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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.