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Finding the Fourth Proportional to 68,190.83, 94,077.87 and 68,085.69

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Solution

The fourth proportional to 68,190.83, 94,077.87 and 68,085.69 is: 93,932.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,190.83 : 94,077.87 = 68,085.69 : x
  2. Step 2: Convert to fraction form
    68,190.83/94,077.87 = 68,085.69/x
  3. Step 3: Cross multiply
    68,190.83x = 94,077.87 × 68,085.69
  4. Step 4: Simplify right side
    68,190.83x = 6,405,356,692.68
  5. Step 5: Solve for x
    x = 6,405,356,692.68/68,190.83
  6. Step 6: Final answer
    x = 93,932.82

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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.