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Finding the Fourth Proportional to 66,874.07, 92,299.82 and 61,487.97

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Solution

The fourth proportional to 66,874.07, 92,299.82 and 61,487.97 is: 84,865.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,874.07 : 92,299.82 = 61,487.97 : x
  2. Step 2: Convert to fraction form
    66,874.07/92,299.82 = 61,487.97/x
  3. Step 3: Cross multiply
    66,874.07x = 92,299.82 × 61,487.97
  4. Step 4: Simplify right side
    66,874.07x = 5,675,329,034.25
  5. Step 5: Solve for x
    x = 5,675,329,034.25/66,874.07
  6. Step 6: Final answer
    x = 84,865.91

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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.