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Finding the Fourth Proportional to 274,891.83, 379,581.76 and 206,790.77

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Solution

The fourth proportional to 274,891.83, 379,581.76 and 206,790.77 is: 285,545.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,891.83 : 379,581.76 = 206,790.77 : x
  2. Step 2: Convert to fraction form
    274,891.83/379,581.76 = 206,790.77/x
  3. Step 3: Cross multiply
    274,891.83x = 379,581.76 × 206,790.77
  4. Step 4: Simplify right side
    274,891.83x = 78,494,005,635.80
  5. Step 5: Solve for x
    x = 78,494,005,635.80/274,891.83
  6. Step 6: Final answer
    x = 285,545.07

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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.