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Finding the Fourth Proportional to 75,262.97, 103,871.87 and 43,431.19

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Solution

The fourth proportional to 75,262.97, 103,871.87 and 43,431.19 is: 59,940.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,262.97 : 103,871.87 = 43,431.19 : x
  2. Step 2: Convert to fraction form
    75,262.97/103,871.87 = 43,431.19/x
  3. Step 3: Cross multiply
    75,262.97x = 103,871.87 × 43,431.19
  4. Step 4: Simplify right side
    75,262.97x = 4,511,278,607.66
  5. Step 5: Solve for x
    x = 4,511,278,607.66/75,262.97
  6. Step 6: Final answer
    x = 59,940.21

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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.