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Finding the Fourth Proportional to 75,293.69, 112,961.19 and 61,218.73

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Solution

The fourth proportional to 75,293.69, 112,961.19 and 61,218.73 is: 91,844.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,293.69 : 112,961.19 = 61,218.73 : x
  2. Step 2: Convert to fraction form
    75,293.69/112,961.19 = 61,218.73/x
  3. Step 3: Cross multiply
    75,293.69x = 112,961.19 × 61,218.73
  4. Step 4: Simplify right side
    75,293.69x = 6,915,340,026.28
  5. Step 5: Solve for x
    x = 6,915,340,026.28/75,293.69
  6. Step 6: Final answer
    x = 91,844.88

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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.