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Finding the Fourth Proportional to 67,200.70, 100,813.20 and 33,836.80

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Solution

The fourth proportional to 67,200.70, 100,813.20 and 33,836.80 is: 50,761.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,200.70 : 100,813.20 = 33,836.80 : x
  2. Step 2: Convert to fraction form
    67,200.70/100,813.20 = 33,836.80/x
  3. Step 3: Cross multiply
    67,200.70x = 100,813.20 × 33,836.80
  4. Step 4: Simplify right side
    67,200.70x = 3,411,196,085.76
  5. Step 5: Solve for x
    x = 3,411,196,085.76/67,200.70
  6. Step 6: Final answer
    x = 50,761.32

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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.