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Finding the Fourth Proportional to 60,364.43, 90,491.21 and 20,893.94

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Solution

The fourth proportional to 60,364.43, 90,491.21 and 20,893.94 is: 31,321.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,364.43 : 90,491.21 = 20,893.94 : x
  2. Step 2: Convert to fraction form
    60,364.43/90,491.21 = 20,893.94/x
  3. Step 3: Cross multiply
    60,364.43x = 90,491.21 × 20,893.94
  4. Step 4: Simplify right side
    60,364.43x = 1,890,717,912.27
  5. Step 5: Solve for x
    x = 1,890,717,912.27/60,364.43
  6. Step 6: Final answer
    x = 31,321.72

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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.