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Finding the Fourth Proportional to 47,760.40, 71,640.60 and 41,199.40

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Solution

The fourth proportional to 47,760.40, 71,640.60 and 41,199.40 is: 61,799.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,760.40 : 71,640.60 = 41,199.40 : x
  2. Step 2: Convert to fraction form
    47,760.40/71,640.60 = 41,199.40/x
  3. Step 3: Cross multiply
    47,760.40x = 71,640.60 × 41,199.40
  4. Step 4: Simplify right side
    47,760.40x = 2,951,549,735.64
  5. Step 5: Solve for x
    x = 2,951,549,735.64/47,760.40
  6. Step 6: Final answer
    x = 61,799.10

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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.