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Finding the Fourth Proportional to 69,858.15, 104,769.72 and 29,857.37

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Solution

The fourth proportional to 69,858.15, 104,769.72 and 29,857.37 is: 44,778.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,858.15 : 104,769.72 = 29,857.37 : x
  2. Step 2: Convert to fraction form
    69,858.15/104,769.72 = 29,857.37/x
  3. Step 3: Cross multiply
    69,858.15x = 104,769.72 × 29,857.37
  4. Step 4: Simplify right side
    69,858.15x = 3,128,147,770.99
  5. Step 5: Solve for x
    x = 3,128,147,770.99/69,858.15
  6. Step 6: Final answer
    x = 44,778.57

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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.