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Finding the Fourth Proportional to 57,491.70, 86,230.62 and 15,374.94

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Solution

The fourth proportional to 57,491.70, 86,230.62 and 15,374.94 is: 23,060.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,491.70 : 86,230.62 = 15,374.94 : x
  2. Step 2: Convert to fraction form
    57,491.70/86,230.62 = 15,374.94/x
  3. Step 3: Cross multiply
    57,491.70x = 86,230.62 × 15,374.94
  4. Step 4: Simplify right side
    57,491.70x = 1,325,790,608.66
  5. Step 5: Solve for x
    x = 1,325,790,608.66/57,491.70
  6. Step 6: Final answer
    x = 23,060.56

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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.