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Finding the Fourth Proportional to 11,879.66, 17,839.90 and 10,548.48

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Solution

The fourth proportional to 11,879.66, 17,839.90 and 10,548.48 is: 15,840.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,879.66 : 17,839.90 = 10,548.48 : x
  2. Step 2: Convert to fraction form
    11,879.66/17,839.90 = 10,548.48/x
  3. Step 3: Cross multiply
    11,879.66x = 17,839.90 × 10,548.48
  4. Step 4: Simplify right side
    11,879.66x = 188,183,828.35
  5. Step 5: Solve for x
    x = 188,183,828.35/11,879.66
  6. Step 6: Final answer
    x = 15,840.84

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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.