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Finding the Fourth Proportional to 66,601.60, 99,891.36 and 19,843.52

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Solution

The fourth proportional to 66,601.60, 99,891.36 and 19,843.52 is: 29,761.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,601.60 : 99,891.36 = 19,843.52 : x
  2. Step 2: Convert to fraction form
    66,601.60/99,891.36 = 19,843.52/x
  3. Step 3: Cross multiply
    66,601.60x = 99,891.36 × 19,843.52
  4. Step 4: Simplify right side
    66,601.60x = 1,982,196,199.99
  5. Step 5: Solve for x
    x = 1,982,196,199.99/66,601.60
  6. Step 6: Final answer
    x = 29,761.99

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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.