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Finding the Fourth Proportional to 381,699.10, 572,876.70 and 168,794.65

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Solution

The fourth proportional to 381,699.10, 572,876.70 and 168,794.65 is: 253,337.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,699.10 : 572,876.70 = 168,794.65 : x
  2. Step 2: Convert to fraction form
    381,699.10/572,876.70 = 168,794.65/x
  3. Step 3: Cross multiply
    381,699.10x = 572,876.70 × 168,794.65
  4. Step 4: Simplify right side
    381,699.10x = 96,698,522,069.66
  5. Step 5: Solve for x
    x = 96,698,522,069.66/381,699.10
  6. Step 6: Final answer
    x = 253,337.04

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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.