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Finding the Fourth Proportional to 399,183.40, 598,858.30 and 133,026.60

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Solution

The fourth proportional to 399,183.40, 598,858.30 and 133,026.60 is: 199,567.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,183.40 : 598,858.30 = 133,026.60 : x
  2. Step 2: Convert to fraction form
    399,183.40/598,858.30 = 133,026.60/x
  3. Step 3: Cross multiply
    399,183.40x = 598,858.30 × 133,026.60
  4. Step 4: Simplify right side
    399,183.40x = 79,664,083,530.78
  5. Step 5: Solve for x
    x = 79,664,083,530.78/399,183.40
  6. Step 6: Final answer
    x = 199,567.63

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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.