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Finding the Fourth Proportional to 66,954.71, 100,379.22 and 33,197.45

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Solution

The fourth proportional to 66,954.71, 100,379.22 and 33,197.45 is: 49,769.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,954.71 : 100,379.22 = 33,197.45 : x
  2. Step 2: Convert to fraction form
    66,954.71/100,379.22 = 33,197.45/x
  3. Step 3: Cross multiply
    66,954.71x = 100,379.22 × 33,197.45
  4. Step 4: Simplify right side
    66,954.71x = 3,332,334,261.97
  5. Step 5: Solve for x
    x = 3,332,334,261.97/66,954.71
  6. Step 6: Final answer
    x = 49,769.98

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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.