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Finding the Fourth Proportional to 11,913.83, 17,846.64 and 5,679.89

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Solution

The fourth proportional to 11,913.83, 17,846.64 and 5,679.89 is: 8,508.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,913.83 : 17,846.64 = 5,679.89 : x
  2. Step 2: Convert to fraction form
    11,913.83/17,846.64 = 5,679.89/x
  3. Step 3: Cross multiply
    11,913.83x = 17,846.64 × 5,679.89
  4. Step 4: Simplify right side
    11,913.83x = 101,366,862.84
  5. Step 5: Solve for x
    x = 101,366,862.84/11,913.83
  6. Step 6: Final answer
    x = 8,508.34

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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.