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Finding the Fourth Proportional to 203,912.66, 281,286.12 and 189,479.72

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Solution

The fourth proportional to 203,912.66, 281,286.12 and 189,479.72 is: 261,376.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,912.66 : 281,286.12 = 189,479.72 : x
  2. Step 2: Convert to fraction form
    203,912.66/281,286.12 = 189,479.72/x
  3. Step 3: Cross multiply
    203,912.66x = 281,286.12 × 189,479.72
  4. Step 4: Simplify right side
    203,912.66x = 53,298,015,257.49
  5. Step 5: Solve for x
    x = 53,298,015,257.49/203,912.66
  6. Step 6: Final answer
    x = 261,376.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.