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Finding the Fourth Proportional to 61,193.28, 91,772.28 and 16,821.48

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Solution

The fourth proportional to 61,193.28, 91,772.28 and 16,821.48 is: 25,227.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,193.28 : 91,772.28 = 16,821.48 : x
  2. Step 2: Convert to fraction form
    61,193.28/91,772.28 = 16,821.48/x
  3. Step 3: Cross multiply
    61,193.28x = 91,772.28 × 16,821.48
  4. Step 4: Simplify right side
    61,193.28x = 1,543,745,572.57
  5. Step 5: Solve for x
    x = 1,543,745,572.57/61,193.28
  6. Step 6: Final answer
    x = 25,227.37

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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.