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Finding the Fourth Proportional to 381,245.52, 571,872.38 and 115,008.34

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Solution

The fourth proportional to 381,245.52, 571,872.38 and 115,008.34 is: 172,513.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,245.52 : 571,872.38 = 115,008.34 : x
  2. Step 2: Convert to fraction form
    381,245.52/571,872.38 = 115,008.34/x
  3. Step 3: Cross multiply
    381,245.52x = 571,872.38 × 115,008.34
  4. Step 4: Simplify right side
    381,245.52x = 65,770,092,506.65
  5. Step 5: Solve for x
    x = 65,770,092,506.65/381,245.52
  6. Step 6: Final answer
    x = 172,513.75

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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.