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Finding the Fourth Proportional to 235,724.80, 353,068.80 and 204,620.80

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Solution

The fourth proportional to 235,724.80, 353,068.80 and 204,620.80 is: 306,481.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,724.80 : 353,068.80 = 204,620.80 : x
  2. Step 2: Convert to fraction form
    235,724.80/353,068.80 = 204,620.80/x
  3. Step 3: Cross multiply
    235,724.80x = 353,068.80 × 204,620.80
  4. Step 4: Simplify right side
    235,724.80x = 72,245,220,311.04
  5. Step 5: Solve for x
    x = 72,245,220,311.04/235,724.80
  6. Step 6: Final answer
    x = 306,481.20

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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.