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Finding the Fourth Proportional to 41,992.88, 63,076.80 and 35,431.92

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Solution

The fourth proportional to 41,992.88, 63,076.80 and 35,431.92 is: 53,221.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,992.88 : 63,076.80 = 35,431.92 : x
  2. Step 2: Convert to fraction form
    41,992.88/63,076.80 = 35,431.92/x
  3. Step 3: Cross multiply
    41,992.88x = 63,076.80 × 35,431.92
  4. Step 4: Simplify right side
    41,992.88x = 2,234,932,131.46
  5. Step 5: Solve for x
    x = 2,234,932,131.46/41,992.88
  6. Step 6: Final answer
    x = 53,221.69

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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.