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Finding the Fourth Proportional to 18,556.92, 27,835.44 and 5,409.36

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Solution

The fourth proportional to 18,556.92, 27,835.44 and 5,409.36 is: 8,114.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,556.92 : 27,835.44 = 5,409.36 : x
  2. Step 2: Convert to fraction form
    18,556.92/27,835.44 = 5,409.36/x
  3. Step 3: Cross multiply
    18,556.92x = 27,835.44 × 5,409.36
  4. Step 4: Simplify right side
    18,556.92x = 150,571,915.72
  5. Step 5: Solve for x
    x = 150,571,915.72/18,556.92
  6. Step 6: Final answer
    x = 8,114.06

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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.