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Finding the Fourth Proportional to 60,755.12, 91,135.92 and 19,198.88

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Solution

The fourth proportional to 60,755.12, 91,135.92 and 19,198.88 is: 28,799.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,755.12 : 91,135.92 = 19,198.88 : x
  2. Step 2: Convert to fraction form
    60,755.12/91,135.92 = 19,198.88/x
  3. Step 3: Cross multiply
    60,755.12x = 91,135.92 × 19,198.88
  4. Step 4: Simplify right side
    60,755.12x = 1,749,707,136.09
  5. Step 5: Solve for x
    x = 1,749,707,136.09/60,755.12
  6. Step 6: Final answer
    x = 28,799.34

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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.