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Finding the Fourth Proportional to 436,206.70, 654,310.05 and 331,230.70

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Solution

The fourth proportional to 436,206.70, 654,310.05 and 331,230.70 is: 496,846.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,206.70 : 654,310.05 = 331,230.70 : x
  2. Step 2: Convert to fraction form
    436,206.70/654,310.05 = 331,230.70/x
  3. Step 3: Cross multiply
    436,206.70x = 654,310.05 × 331,230.70
  4. Step 4: Simplify right side
    436,206.70x = 216,727,575,878.54
  5. Step 5: Solve for x
    x = 216,727,575,878.54/436,206.70
  6. Step 6: Final answer
    x = 496,846.05

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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.