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Finding the Fourth Proportional to 66,773.52, 100,168.19 and 41,815.63

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Solution

The fourth proportional to 66,773.52, 100,168.19 and 41,815.63 is: 62,728.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,773.52 : 100,168.19 = 41,815.63 : x
  2. Step 2: Convert to fraction form
    66,773.52/100,168.19 = 41,815.63/x
  3. Step 3: Cross multiply
    66,773.52x = 100,168.19 × 41,815.63
  4. Step 4: Simplify right side
    66,773.52x = 4,188,595,511.31
  5. Step 5: Solve for x
    x = 4,188,595,511.31/66,773.52
  6. Step 6: Final answer
    x = 62,728.40

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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.