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Finding the Fourth Proportional to 73,268.72, 109,893.12 and 20,682.44

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Solution

The fourth proportional to 73,268.72, 109,893.12 and 20,682.44 is: 31,020.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,268.72 : 109,893.12 = 20,682.44 : x
  2. Step 2: Convert to fraction form
    73,268.72/109,893.12 = 20,682.44/x
  3. Step 3: Cross multiply
    73,268.72x = 109,893.12 × 20,682.44
  4. Step 4: Simplify right side
    73,268.72x = 2,272,857,860.81
  5. Step 5: Solve for x
    x = 2,272,857,860.81/73,268.72
  6. Step 6: Final answer
    x = 31,020.85

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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.