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Finding the Fourth Proportional to 86,530, 129,809.04 and 33,910.96

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Solution

The fourth proportional to 86,530, 129,809.04 and 33,910.96 is: 50,871.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,530 : 129,809.04 = 33,910.96 : x
  2. Step 2: Convert to fraction form
    86,530/129,809.04 = 33,910.96/x
  3. Step 3: Cross multiply
    86,530x = 129,809.04 × 33,910.96
  4. Step 4: Simplify right side
    86,530x = 4,401,949,163.08
  5. Step 5: Solve for x
    x = 4,401,949,163.08/86,530
  6. Step 6: Final answer
    x = 50,871.94

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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.