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Finding the Fourth Proportional to 14,893.76, 20,553.92 and 8,179.57

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Solution

The fourth proportional to 14,893.76, 20,553.92 and 8,179.57 is: 11,288.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,893.76 : 20,553.92 = 8,179.57 : x
  2. Step 2: Convert to fraction form
    14,893.76/20,553.92 = 8,179.57/x
  3. Step 3: Cross multiply
    14,893.76x = 20,553.92 × 8,179.57
  4. Step 4: Simplify right side
    14,893.76x = 168,122,186.52
  5. Step 5: Solve for x
    x = 168,122,186.52/14,893.76
  6. Step 6: Final answer
    x = 11,288.10

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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.