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Finding the Fourth Proportional to 68,418.42, 94,410.21 and 39,732.48

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Solution

The fourth proportional to 68,418.42, 94,410.21 and 39,732.48 is: 54,826.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,418.42 : 94,410.21 = 39,732.48 : x
  2. Step 2: Convert to fraction form
    68,418.42/94,410.21 = 39,732.48/x
  3. Step 3: Cross multiply
    68,418.42x = 94,410.21 × 39,732.48
  4. Step 4: Simplify right side
    68,418.42x = 3,751,151,780.62
  5. Step 5: Solve for x
    x = 3,751,151,780.62/68,418.42
  6. Step 6: Final answer
    x = 54,826.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.