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Finding the Fourth Proportional to 331,143.80, 496,205.40 and 246,506.90

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Solution

The fourth proportional to 331,143.80, 496,205.40 and 246,506.90 is: 369,380.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,143.80 : 496,205.40 = 246,506.90 : x
  2. Step 2: Convert to fraction form
    331,143.80/496,205.40 = 246,506.90/x
  3. Step 3: Cross multiply
    331,143.80x = 496,205.40 × 246,506.90
  4. Step 4: Simplify right side
    331,143.80x = 122,318,054,917.26
  5. Step 5: Solve for x
    x = 122,318,054,917.26/331,143.80
  6. Step 6: Final answer
    x = 369,380.48

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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.