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Finding the Fourth Proportional to 68,991.75, 103,505.85 and 22,245.84

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Solution

The fourth proportional to 68,991.75, 103,505.85 and 22,245.84 is: 33,374.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,991.75 : 103,505.85 = 22,245.84 : x
  2. Step 2: Convert to fraction form
    68,991.75/103,505.85 = 22,245.84/x
  3. Step 3: Cross multiply
    68,991.75x = 103,505.85 × 22,245.84
  4. Step 4: Simplify right side
    68,991.75x = 2,302,574,578.16
  5. Step 5: Solve for x
    x = 2,302,574,578.16/68,991.75
  6. Step 6: Final answer
    x = 33,374.64

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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.