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Finding the Fourth Proportional to 85,131, 117,285.17 and 67,219.47

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Solution

The fourth proportional to 85,131, 117,285.17 and 67,219.47 is: 92,608.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,131 : 117,285.17 = 67,219.47 : x
  2. Step 2: Convert to fraction form
    85,131/117,285.17 = 67,219.47/x
  3. Step 3: Cross multiply
    85,131x = 117,285.17 × 67,219.47
  4. Step 4: Simplify right side
    85,131x = 7,883,846,630.16
  5. Step 5: Solve for x
    x = 7,883,846,630.16/85,131
  6. Step 6: Final answer
    x = 92,608.41

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.