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Finding the Fourth Proportional to 75,710.97, 103,724.51 and 72,873.36

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Solution

The fourth proportional to 75,710.97, 103,724.51 and 72,873.36 is: 99,836.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,710.97 : 103,724.51 = 72,873.36 : x
  2. Step 2: Convert to fraction form
    75,710.97/103,724.51 = 72,873.36/x
  3. Step 3: Cross multiply
    75,710.97x = 103,724.51 × 72,873.36
  4. Step 4: Simplify right side
    75,710.97x = 7,558,753,193.69
  5. Step 5: Solve for x
    x = 7,558,753,193.69/75,710.97
  6. Step 6: Final answer
    x = 99,836.96

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.