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Finding the Fourth Proportional to 332,912.20, 499,368.30 and 133,328.20

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Solution

The fourth proportional to 332,912.20, 499,368.30 and 133,328.20 is: 199,992.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    332,912.20 : 499,368.30 = 133,328.20 : x
  2. Step 2: Convert to fraction form
    332,912.20/499,368.30 = 133,328.20/x
  3. Step 3: Cross multiply
    332,912.20x = 499,368.30 × 133,328.20
  4. Step 4: Simplify right side
    332,912.20x = 66,579,876,576.06
  5. Step 5: Solve for x
    x = 66,579,876,576.06/332,912.20
  6. Step 6: Final answer
    x = 199,992.30

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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.