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Finding the Fourth Proportional to 14,893.74, 20,553.92 and 8,179.99

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Solution

The fourth proportional to 14,893.74, 20,553.92 and 8,179.99 is: 11,288.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,893.74 : 20,553.92 = 8,179.99 : x
  2. Step 2: Convert to fraction form
    14,893.74/20,553.92 = 8,179.99/x
  3. Step 3: Cross multiply
    14,893.74x = 20,553.92 × 8,179.99
  4. Step 4: Simplify right side
    14,893.74x = 168,130,860.06
  5. Step 5: Solve for x
    x = 168,130,860.06/14,893.74
  6. Step 6: Final answer
    x = 11,288.69

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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.