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Finding the Fourth Proportional to 53,796.36, 80,694.90 and 18,735.90

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Solution

The fourth proportional to 53,796.36, 80,694.90 and 18,735.90 is: 28,103.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,796.36 : 80,694.90 = 18,735.90 : x
  2. Step 2: Convert to fraction form
    53,796.36/80,694.90 = 18,735.90/x
  3. Step 3: Cross multiply
    53,796.36x = 80,694.90 × 18,735.90
  4. Step 4: Simplify right side
    53,796.36x = 1,511,891,576.91
  5. Step 5: Solve for x
    x = 1,511,891,576.91/53,796.36
  6. Step 6: Final answer
    x = 28,103.98

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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.