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Finding the Fourth Proportional to 66,828.44, 92,113.40 and 53,375.96

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Solution

The fourth proportional to 66,828.44, 92,113.40 and 53,375.96 is: 73,571.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,828.44 : 92,113.40 = 53,375.96 : x
  2. Step 2: Convert to fraction form
    66,828.44/92,113.40 = 53,375.96/x
  3. Step 3: Cross multiply
    66,828.44x = 92,113.40 × 53,375.96
  4. Step 4: Simplify right side
    66,828.44x = 4,916,641,517.59
  5. Step 5: Solve for x
    x = 4,916,641,517.59/66,828.44
  6. Step 6: Final answer
    x = 73,571.09

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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.