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Finding the Fourth Proportional to 496,790.82, 685,665.81 and 281,951.01

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Solution

The fourth proportional to 496,790.82, 685,665.81 and 281,951.01 is: 389,146.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,790.82 : 685,665.81 = 281,951.01 : x
  2. Step 2: Convert to fraction form
    496,790.82/685,665.81 = 281,951.01/x
  3. Step 3: Cross multiply
    496,790.82x = 685,665.81 × 281,951.01
  4. Step 4: Simplify right side
    496,790.82x = 193,324,167,651.97
  5. Step 5: Solve for x
    x = 193,324,167,651.97/496,790.82
  6. Step 6: Final answer
    x = 389,146.01

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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.