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Finding the Fourth Proportional to 14,893.70, 20,553.32 and 8,179.76

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Solution

The fourth proportional to 14,893.70, 20,553.32 and 8,179.76 is: 11,288.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,893.70 : 20,553.32 = 8,179.76 : x
  2. Step 2: Convert to fraction form
    14,893.70/20,553.32 = 8,179.76/x
  3. Step 3: Cross multiply
    14,893.70x = 20,553.32 × 8,179.76
  4. Step 4: Simplify right side
    14,893.70x = 168,121,296.64
  5. Step 5: Solve for x
    x = 168,121,296.64/14,893.70
  6. Step 6: Final answer
    x = 11,288.09

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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.