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Finding the Fourth Proportional to 366,821.20, 550,231.80 and 316,082.80

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Solution

The fourth proportional to 366,821.20, 550,231.80 and 316,082.80 is: 474,124.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,821.20 : 550,231.80 = 316,082.80 : x
  2. Step 2: Convert to fraction form
    366,821.20/550,231.80 = 316,082.80/x
  3. Step 3: Cross multiply
    366,821.20x = 550,231.80 × 316,082.80
  4. Step 4: Simplify right side
    366,821.20x = 173,918,807,993.04
  5. Step 5: Solve for x
    x = 173,918,807,993.04/366,821.20
  6. Step 6: Final answer
    x = 474,124.20

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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.