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Finding the Fourth Proportional to 331,310.40, 496,969.92 and 94,660.80

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Solution

The fourth proportional to 331,310.40, 496,969.92 and 94,660.80 is: 141,992.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,310.40 : 496,969.92 = 94,660.80 : x
  2. Step 2: Convert to fraction form
    331,310.40/496,969.92 = 94,660.80/x
  3. Step 3: Cross multiply
    331,310.40x = 496,969.92 × 94,660.80
  4. Step 4: Simplify right side
    331,310.40x = 47,043,570,203.14
  5. Step 5: Solve for x
    x = 47,043,570,203.14/331,310.40
  6. Step 6: Final answer
    x = 141,992.43

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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.