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Finding the Fourth Proportional to 57,227.30, 78,969.82 and 31,732.72

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Solution

The fourth proportional to 57,227.30, 78,969.82 and 31,732.72 is: 43,789.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,227.30 : 78,969.82 = 31,732.72 : x
  2. Step 2: Convert to fraction form
    57,227.30/78,969.82 = 31,732.72/x
  3. Step 3: Cross multiply
    57,227.30x = 78,969.82 × 31,732.72
  4. Step 4: Simplify right side
    57,227.30x = 2,505,927,457.57
  5. Step 5: Solve for x
    x = 2,505,927,457.57/57,227.30
  6. Step 6: Final answer
    x = 43,789.02

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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.