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Finding the Fourth Proportional to 69,581.01, 104,377.16 and 19,661.52

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Solution

The fourth proportional to 69,581.01, 104,377.16 and 19,661.52 is: 29,493.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,581.01 : 104,377.16 = 19,661.52 : x
  2. Step 2: Convert to fraction form
    69,581.01/104,377.16 = 19,661.52/x
  3. Step 3: Cross multiply
    69,581.01x = 104,377.16 × 19,661.52
  4. Step 4: Simplify right side
    69,581.01x = 2,052,213,618.88
  5. Step 5: Solve for x
    x = 2,052,213,618.88/69,581.01
  6. Step 6: Final answer
    x = 29,493.88

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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.