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Finding the Fourth Proportional to 11,198.80, 16,787.80 and 4,955.48

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Solution

The fourth proportional to 11,198.80, 16,787.80 and 4,955.48 is: 7,428.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,198.80 : 16,787.80 = 4,955.48 : x
  2. Step 2: Convert to fraction form
    11,198.80/16,787.80 = 4,955.48/x
  3. Step 3: Cross multiply
    11,198.80x = 16,787.80 × 4,955.48
  4. Step 4: Simplify right side
    11,198.80x = 83,191,510.82
  5. Step 5: Solve for x
    x = 83,191,510.82/11,198.80
  6. Step 6: Final answer
    x = 7,428.61

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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.