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Finding the Fourth Proportional to 14,893.73, 20,553.49 and 8,179.50

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Solution

The fourth proportional to 14,893.73, 20,553.49 and 8,179.50 is: 11,287.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,893.73 : 20,553.49 = 8,179.50 : x
  2. Step 2: Convert to fraction form
    14,893.73/20,553.49 = 8,179.50/x
  3. Step 3: Cross multiply
    14,893.73x = 20,553.49 × 8,179.50
  4. Step 4: Simplify right side
    14,893.73x = 168,117,304.68
  5. Step 5: Solve for x
    x = 168,117,304.68/14,893.73
  6. Step 6: Final answer
    x = 11,287.79

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1.5x scale

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.