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Finding the Fourth Proportional to 86,105.52, 129,191.40 and 33,552

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Solution

The fourth proportional to 86,105.52, 129,191.40 and 33,552 is: 50,340.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,105.52 : 129,191.40 = 33,552 : x
  2. Step 2: Convert to fraction form
    86,105.52/129,191.40 = 33,552/x
  3. Step 3: Cross multiply
    86,105.52x = 129,191.40 × 33,552
  4. Step 4: Simplify right side
    86,105.52x = 4,334,629,852.80
  5. Step 5: Solve for x
    x = 4,334,629,852.80/86,105.52
  6. Step 6: Final answer
    x = 50,340.91

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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.