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Finding the Fourth Proportional to 61,217.80, 91,880.70 and 36,226.60

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Solution

The fourth proportional to 61,217.80, 91,880.70 and 36,226.60 is: 54,371.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,217.80 : 91,880.70 = 36,226.60 : x
  2. Step 2: Convert to fraction form
    61,217.80/91,880.70 = 36,226.60/x
  3. Step 3: Cross multiply
    61,217.80x = 91,880.70 × 36,226.60
  4. Step 4: Simplify right side
    61,217.80x = 3,328,525,366.62
  5. Step 5: Solve for x
    x = 3,328,525,366.62/61,217.80
  6. Step 6: Final answer
    x = 54,371.86

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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.