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Finding the Fourth Proportional to 331,240.35, 496,790.86 and 106,620.87

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Solution

The fourth proportional to 331,240.35, 496,790.86 and 106,620.87 is: 159,908.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,240.35 : 496,790.86 = 106,620.87 : x
  2. Step 2: Convert to fraction form
    331,240.35/496,790.86 = 106,620.87/x
  3. Step 3: Cross multiply
    331,240.35x = 496,790.86 × 106,620.87
  4. Step 4: Simplify right side
    331,240.35x = 52,968,273,701.25
  5. Step 5: Solve for x
    x = 52,968,273,701.25/331,240.35
  6. Step 6: Final answer
    x = 159,908.88

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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.