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Finding the Fourth Proportional to 331,243.80, 496,865.70 and 236,765.40

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Solution

The fourth proportional to 331,243.80, 496,865.70 and 236,765.40 is: 355,148.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,243.80 : 496,865.70 = 236,765.40 : x
  2. Step 2: Convert to fraction form
    331,243.80/496,865.70 = 236,765.40/x
  3. Step 3: Cross multiply
    331,243.80x = 496,865.70 × 236,765.40
  4. Step 4: Simplify right side
    331,243.80x = 117,640,606,206.78
  5. Step 5: Solve for x
    x = 117,640,606,206.78/331,243.80
  6. Step 6: Final answer
    x = 355,148.10

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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.