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Finding the Fourth Proportional to 11,579.86, 17,369.79 and 3,259.88

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Solution

The fourth proportional to 11,579.86, 17,369.79 and 3,259.88 is: 4,889.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,579.86 : 17,369.79 = 3,259.88 : x
  2. Step 2: Convert to fraction form
    11,579.86/17,369.79 = 3,259.88/x
  3. Step 3: Cross multiply
    11,579.86x = 17,369.79 × 3,259.88
  4. Step 4: Simplify right side
    11,579.86x = 56,623,377.60
  5. Step 5: Solve for x
    x = 56,623,377.60/11,579.86
  6. Step 6: Final answer
    x = 4,889.82

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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.