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Finding the Fourth Proportional to 67,163.68, 100,679.92 and 33,783.60

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Solution

The fourth proportional to 67,163.68, 100,679.92 and 33,783.60 is: 50,642.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,163.68 : 100,679.92 = 33,783.60 : x
  2. Step 2: Convert to fraction form
    67,163.68/100,679.92 = 33,783.60/x
  3. Step 3: Cross multiply
    67,163.68x = 100,679.92 × 33,783.60
  4. Step 4: Simplify right side
    67,163.68x = 3,401,330,145.31
  5. Step 5: Solve for x
    x = 3,401,330,145.31/67,163.68
  6. Step 6: Final answer
    x = 50,642.40

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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.