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Finding the Fourth Proportional to 33,940.80, 50,911.20 and 11,746.80

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Solution

The fourth proportional to 33,940.80, 50,911.20 and 11,746.80 is: 17,620.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,940.80 : 50,911.20 = 11,746.80 : x
  2. Step 2: Convert to fraction form
    33,940.80/50,911.20 = 11,746.80/x
  3. Step 3: Cross multiply
    33,940.80x = 50,911.20 × 11,746.80
  4. Step 4: Simplify right side
    33,940.80x = 598,043,684.16
  5. Step 5: Solve for x
    x = 598,043,684.16/33,940.80
  6. Step 6: Final answer
    x = 17,620.20

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1.5x scale

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.