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Finding the Fourth Proportional to 47,932.44, 71,902.98 and 12,871.86

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Solution

The fourth proportional to 47,932.44, 71,902.98 and 12,871.86 is: 19,308.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,932.44 : 71,902.98 = 12,871.86 : x
  2. Step 2: Convert to fraction form
    47,932.44/71,902.98 = 12,871.86/x
  3. Step 3: Cross multiply
    47,932.44x = 71,902.98 × 12,871.86
  4. Step 4: Simplify right side
    47,932.44x = 925,525,092.14
  5. Step 5: Solve for x
    x = 925,525,092.14/47,932.44
  6. Step 6: Final answer
    x = 19,308.95

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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.