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Finding the Fourth Proportional to 312,847.83, 431,724.38 and 176,879.43

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Solution

The fourth proportional to 312,847.83, 431,724.38 and 176,879.43 is: 244,090.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,847.83 : 431,724.38 = 176,879.43 : x
  2. Step 2: Convert to fraction form
    312,847.83/431,724.38 = 176,879.43/x
  3. Step 3: Cross multiply
    312,847.83x = 431,724.38 × 176,879.43
  4. Step 4: Simplify right side
    312,847.83x = 76,363,161,367.11
  5. Step 5: Solve for x
    x = 76,363,161,367.11/312,847.83
  6. Step 6: Final answer
    x = 244,090.43

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.