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Finding the Fourth Proportional to 362,405.20, 543,607.80 and 196,517.20

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Solution

The fourth proportional to 362,405.20, 543,607.80 and 196,517.20 is: 294,775.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    362,405.20 : 543,607.80 = 196,517.20 : x
  2. Step 2: Convert to fraction form
    362,405.20/543,607.80 = 196,517.20/x
  3. Step 3: Cross multiply
    362,405.20x = 543,607.80 × 196,517.20
  4. Step 4: Simplify right side
    362,405.20x = 106,828,282,754.16
  5. Step 5: Solve for x
    x = 106,828,282,754.16/362,405.20
  6. Step 6: Final answer
    x = 294,775.80

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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.