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Finding the Fourth Proportional to 67,175.87, 100,680.78 and 33,905.48

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Solution

The fourth proportional to 67,175.87, 100,680.78 and 33,905.48 is: 50,816.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,175.87 : 100,680.78 = 33,905.48 : x
  2. Step 2: Convert to fraction form
    67,175.87/100,680.78 = 33,905.48/x
  3. Step 3: Cross multiply
    67,175.87x = 100,680.78 × 33,905.48
  4. Step 4: Simplify right side
    67,175.87x = 3,413,630,172.67
  5. Step 5: Solve for x
    x = 3,413,630,172.67/67,175.87
  6. Step 6: Final answer
    x = 50,816.32

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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.