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Finding the Fourth Proportional to 11,879.01, 17,824.56 and 4,864.20

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Solution

The fourth proportional to 11,879.01, 17,824.56 and 4,864.20 is: 7,298.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,879.01 : 17,824.56 = 4,864.20 : x
  2. Step 2: Convert to fraction form
    11,879.01/17,824.56 = 4,864.20/x
  3. Step 3: Cross multiply
    11,879.01x = 17,824.56 × 4,864.20
  4. Step 4: Simplify right side
    11,879.01x = 86,702,224.75
  5. Step 5: Solve for x
    x = 86,702,224.75/11,879.01
  6. Step 6: Final answer
    x = 7,298.78

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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.