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Finding the Fourth Proportional to 11,891.60, 17,837.60 and 4,499.54

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Solution

The fourth proportional to 11,891.60, 17,837.60 and 4,499.54 is: 6,749.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,891.60 : 17,837.60 = 4,499.54 : x
  2. Step 2: Convert to fraction form
    11,891.60/17,837.60 = 4,499.54/x
  3. Step 3: Cross multiply
    11,891.60x = 17,837.60 × 4,499.54
  4. Step 4: Simplify right side
    11,891.60x = 80,260,994.70
  5. Step 5: Solve for x
    x = 80,260,994.70/11,891.60
  6. Step 6: Final answer
    x = 6,749.39

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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.