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Finding the Fourth Proportional to 75,015.73, 103,531.49 and 43,185.97

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Solution

The fourth proportional to 75,015.73, 103,531.49 and 43,185.97 is: 59,602.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,015.73 : 103,531.49 = 43,185.97 : x
  2. Step 2: Convert to fraction form
    75,015.73/103,531.49 = 43,185.97/x
  3. Step 3: Cross multiply
    75,015.73x = 103,531.49 × 43,185.97
  4. Step 4: Simplify right side
    75,015.73x = 4,471,107,411.50
  5. Step 5: Solve for x
    x = 4,471,107,411.50/75,015.73
  6. Step 6: Final answer
    x = 59,602.27

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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.