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Finding the Fourth Proportional to 47,481.99, 65,481.80 and 40,765.47

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Solution

The fourth proportional to 47,481.99, 65,481.80 and 40,765.47 is: 56,219.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,481.99 : 65,481.80 = 40,765.47 : x
  2. Step 2: Convert to fraction form
    47,481.99/65,481.80 = 40,765.47/x
  3. Step 3: Cross multiply
    47,481.99x = 65,481.80 × 40,765.47
  4. Step 4: Simplify right side
    47,481.99x = 2,669,396,149.62
  5. Step 5: Solve for x
    x = 2,669,396,149.62/47,481.99
  6. Step 6: Final answer
    x = 56,219.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.