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Finding the Fourth Proportional to 61,891.80, 92,872.82 and 33,428.40

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Solution

The fourth proportional to 61,891.80, 92,872.82 and 33,428.40 is: 50,161.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,891.80 : 92,872.82 = 33,428.40 : x
  2. Step 2: Convert to fraction form
    61,891.80/92,872.82 = 33,428.40/x
  3. Step 3: Cross multiply
    61,891.80x = 92,872.82 × 33,428.40
  4. Step 4: Simplify right side
    61,891.80x = 3,104,589,776.09
  5. Step 5: Solve for x
    x = 3,104,589,776.09/61,891.80
  6. Step 6: Final answer
    x = 50,161.57

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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.