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Finding the Fourth Proportional to 61,843.98, 92,689.94 and 28,517.78

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Solution

The fourth proportional to 61,843.98, 92,689.94 and 28,517.78 is: 42,741.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,843.98 : 92,689.94 = 28,517.78 : x
  2. Step 2: Convert to fraction form
    61,843.98/92,689.94 = 28,517.78/x
  3. Step 3: Cross multiply
    61,843.98x = 92,689.94 × 28,517.78
  4. Step 4: Simplify right side
    61,843.98x = 2,643,311,317.13
  5. Step 5: Solve for x
    x = 2,643,311,317.13/61,843.98
  6. Step 6: Final answer
    x = 42,741.61

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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.