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Finding the Fourth Proportional to 194,190.72, 290,912.94 and 119,091.96

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Solution

The fourth proportional to 194,190.72, 290,912.94 and 119,091.96 is: 178,409.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,190.72 : 290,912.94 = 119,091.96 : x
  2. Step 2: Convert to fraction form
    194,190.72/290,912.94 = 119,091.96/x
  3. Step 3: Cross multiply
    194,190.72x = 290,912.94 × 119,091.96
  4. Step 4: Simplify right side
    194,190.72x = 34,645,392,213.96
  5. Step 5: Solve for x
    x = 34,645,392,213.96/194,190.72
  6. Step 6: Final answer
    x = 178,409.10

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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.