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Finding the Fourth Proportional to 86,221.96, 129,338.41 and 27,059.97

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Solution

The fourth proportional to 86,221.96, 129,338.41 and 27,059.97 is: 40,591.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,221.96 : 129,338.41 = 27,059.97 : x
  2. Step 2: Convert to fraction form
    86,221.96/129,338.41 = 27,059.97/x
  3. Step 3: Cross multiply
    86,221.96x = 129,338.41 × 27,059.97
  4. Step 4: Simplify right side
    86,221.96x = 3,499,893,494.45
  5. Step 5: Solve for x
    x = 3,499,893,494.45/86,221.96
  6. Step 6: Final answer
    x = 40,591.67

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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.