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Finding the Fourth Proportional to 61,204.20, 91,806.30 and 33,210.60

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Solution

The fourth proportional to 61,204.20, 91,806.30 and 33,210.60 is: 49,815.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,204.20 : 91,806.30 = 33,210.60 : x
  2. Step 2: Convert to fraction form
    61,204.20/91,806.30 = 33,210.60/x
  3. Step 3: Cross multiply
    61,204.20x = 91,806.30 × 33,210.60
  4. Step 4: Simplify right side
    61,204.20x = 3,048,942,306.78
  5. Step 5: Solve for x
    x = 3,048,942,306.78/61,204.20
  6. Step 6: Final answer
    x = 49,815.90

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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.