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Finding the Fourth Proportional to 8,474.73, 12,711.95 and 2,631.34

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Solution

The fourth proportional to 8,474.73, 12,711.95 and 2,631.34 is: 3,946.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,474.73 : 12,711.95 = 2,631.34 : x
  2. Step 2: Convert to fraction form
    8,474.73/12,711.95 = 2,631.34/x
  3. Step 3: Cross multiply
    8,474.73x = 12,711.95 × 2,631.34
  4. Step 4: Simplify right side
    8,474.73x = 33,449,462.51
  5. Step 5: Solve for x
    x = 33,449,462.51/8,474.73
  6. Step 6: Final answer
    x = 3,946.96

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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.