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Finding the Fourth Proportional to 86,447.80, 129,619.86 and 33,794.56

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Solution

The fourth proportional to 86,447.80, 129,619.86 and 33,794.56 is: 50,671.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,447.80 : 129,619.86 = 33,794.56 : x
  2. Step 2: Convert to fraction form
    86,447.80/129,619.86 = 33,794.56/x
  3. Step 3: Cross multiply
    86,447.80x = 129,619.86 × 33,794.56
  4. Step 4: Simplify right side
    86,447.80x = 4,380,446,135.96
  5. Step 5: Solve for x
    x = 4,380,446,135.96/86,447.80
  6. Step 6: Final answer
    x = 50,671.57

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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.