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Finding the Fourth Proportional to 67,040.88, 100,566.12 and 20,297.40

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Solution

The fourth proportional to 67,040.88, 100,566.12 and 20,297.40 is: 30,447.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,040.88 : 100,566.12 = 20,297.40 : x
  2. Step 2: Convert to fraction form
    67,040.88/100,566.12 = 20,297.40/x
  3. Step 3: Cross multiply
    67,040.88x = 100,566.12 × 20,297.40
  4. Step 4: Simplify right side
    67,040.88x = 2,041,230,764.09
  5. Step 5: Solve for x
    x = 2,041,230,764.09/67,040.88
  6. Step 6: Final answer
    x = 30,447.55

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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.