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Finding the Fourth Proportional to 108,540.80, 162,811.20 and 33,660.80

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Solution

The fourth proportional to 108,540.80, 162,811.20 and 33,660.80 is: 50,491.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,540.80 : 162,811.20 = 33,660.80 : x
  2. Step 2: Convert to fraction form
    108,540.80/162,811.20 = 33,660.80/x
  3. Step 3: Cross multiply
    108,540.80x = 162,811.20 × 33,660.80
  4. Step 4: Simplify right side
    108,540.80x = 5,480,355,240.96
  5. Step 5: Solve for x
    x = 5,480,355,240.96/108,540.80
  6. Step 6: Final answer
    x = 50,491.20

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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.