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Finding the Fourth Proportional to 79,884.80, 119,731.20 and 33,113.60

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Solution

The fourth proportional to 79,884.80, 119,731.20 and 33,113.60 is: 49,630.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,884.80 : 119,731.20 = 33,113.60 : x
  2. Step 2: Convert to fraction form
    79,884.80/119,731.20 = 33,113.60/x
  3. Step 3: Cross multiply
    79,884.80x = 119,731.20 × 33,113.60
  4. Step 4: Simplify right side
    79,884.80x = 3,964,731,064.32
  5. Step 5: Solve for x
    x = 3,964,731,064.32/79,884.80
  6. Step 6: Final answer
    x = 49,630.61

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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.