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Finding the Fourth Proportional to 92,043.73, 138,067.31 and 28,862.46

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Solution

The fourth proportional to 92,043.73, 138,067.31 and 28,862.46 is: 43,294.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,043.73 : 138,067.31 = 28,862.46 : x
  2. Step 2: Convert to fraction form
    92,043.73/138,067.31 = 28,862.46/x
  3. Step 3: Cross multiply
    92,043.73x = 138,067.31 × 28,862.46
  4. Step 4: Simplify right side
    92,043.73x = 3,984,962,067.87
  5. Step 5: Solve for x
    x = 3,984,962,067.87/92,043.73
  6. Step 6: Final answer
    x = 43,294.23

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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.