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Finding the Fourth Proportional to 68,933.40, 103,418.10 and 22,187.40

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Solution

The fourth proportional to 68,933.40, 103,418.10 and 22,187.40 is: 33,286.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,933.40 : 103,418.10 = 22,187.40 : x
  2. Step 2: Convert to fraction form
    68,933.40/103,418.10 = 22,187.40/x
  3. Step 3: Cross multiply
    68,933.40x = 103,418.10 × 22,187.40
  4. Step 4: Simplify right side
    68,933.40x = 2,294,578,751.94
  5. Step 5: Solve for x
    x = 2,294,578,751.94/68,933.40
  6. Step 6: Final answer
    x = 33,286.89

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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.