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Finding the Fourth Proportional to 109,716.82, 151,366.33 and 63,768.82

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Solution

The fourth proportional to 109,716.82, 151,366.33 and 63,768.82 is: 87,976.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,716.82 : 151,366.33 = 63,768.82 : x
  2. Step 2: Convert to fraction form
    109,716.82/151,366.33 = 63,768.82/x
  3. Step 3: Cross multiply
    109,716.82x = 151,366.33 × 63,768.82
  4. Step 4: Simplify right side
    109,716.82x = 9,652,452,251.83
  5. Step 5: Solve for x
    x = 9,652,452,251.83/109,716.82
  6. Step 6: Final answer
    x = 87,976.05

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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.