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Finding the Fourth Proportional to 11,698.83, 17,553.12 and 5,129.73

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Solution

The fourth proportional to 11,698.83, 17,553.12 and 5,129.73 is: 7,696.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,698.83 : 17,553.12 = 5,129.73 : x
  2. Step 2: Convert to fraction form
    11,698.83/17,553.12 = 5,129.73/x
  3. Step 3: Cross multiply
    11,698.83x = 17,553.12 × 5,129.73
  4. Step 4: Simplify right side
    11,698.83x = 90,042,766.26
  5. Step 5: Solve for x
    x = 90,042,766.26/11,698.83
  6. Step 6: Final answer
    x = 7,696.73

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1.5x scale

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.