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Finding the Fourth Proportional to 381,694.90, 572,081.55 and 194,610.10

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Solution

The fourth proportional to 381,694.90, 572,081.55 and 194,610.10 is: 291,680.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,694.90 : 572,081.55 = 194,610.10 : x
  2. Step 2: Convert to fraction form
    381,694.90/572,081.55 = 194,610.10/x
  3. Step 3: Cross multiply
    381,694.90x = 572,081.55 × 194,610.10
  4. Step 4: Simplify right side
    381,694.90x = 111,332,847,653.66
  5. Step 5: Solve for x
    x = 111,332,847,653.66/381,694.90
  6. Step 6: Final answer
    x = 291,680.21

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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.