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Finding the Fourth Proportional to 10,951.90, 16,431.90 and 3,556.60

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Solution

The fourth proportional to 10,951.90, 16,431.90 and 3,556.60 is: 5,336.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,951.90 : 16,431.90 = 3,556.60 : x
  2. Step 2: Convert to fraction form
    10,951.90/16,431.90 = 3,556.60/x
  3. Step 3: Cross multiply
    10,951.90x = 16,431.90 × 3,556.60
  4. Step 4: Simplify right side
    10,951.90x = 58,441,695.54
  5. Step 5: Solve for x
    x = 58,441,695.54/10,951.90
  6. Step 6: Final answer
    x = 5,336.22

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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.