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Finding the Fourth Proportional to 57,295.93, 79,067.16 and 31,800.81

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Solution

The fourth proportional to 57,295.93, 79,067.16 and 31,800.81 is: 43,884.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,295.93 : 79,067.16 = 31,800.81 : x
  2. Step 2: Convert to fraction form
    57,295.93/79,067.16 = 31,800.81/x
  3. Step 3: Cross multiply
    57,295.93x = 79,067.16 × 31,800.81
  4. Step 4: Simplify right side
    57,295.93x = 2,514,399,732.40
  5. Step 5: Solve for x
    x = 2,514,399,732.40/57,295.93
  6. Step 6: Final answer
    x = 43,884.44

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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.