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Finding the Fourth Proportional to 5,769.88, 8,636.35 and 2,992.75

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Solution

The fourth proportional to 5,769.88, 8,636.35 and 2,992.75 is: 4,479.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,769.88 : 8,636.35 = 2,992.75 : x
  2. Step 2: Convert to fraction form
    5,769.88/8,636.35 = 2,992.75/x
  3. Step 3: Cross multiply
    5,769.88x = 8,636.35 × 2,992.75
  4. Step 4: Simplify right side
    5,769.88x = 25,846,404.58
  5. Step 5: Solve for x
    x = 25,846,404.58/5,769.88
  6. Step 6: Final answer
    x = 4,479.54

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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.