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Finding the Fourth Proportional to 84,093.67, 126,199.62 and 76,053.95

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Solution

The fourth proportional to 84,093.67, 126,199.62 and 76,053.95 is: 114,134.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,093.67 : 126,199.62 = 76,053.95 : x
  2. Step 2: Convert to fraction form
    84,093.67/126,199.62 = 76,053.95/x
  3. Step 3: Cross multiply
    84,093.67x = 126,199.62 × 76,053.95
  4. Step 4: Simplify right side
    84,093.67x = 9,597,979,431.75
  5. Step 5: Solve for x
    x = 9,597,979,431.75/84,093.67
  6. Step 6: Final answer
    x = 114,134.38

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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.