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Finding the Fourth Proportional to 11,859.58, 17,789.19 and 3,539.62

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Solution

The fourth proportional to 11,859.58, 17,789.19 and 3,539.62 is: 5,309.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,859.58 : 17,789.19 = 3,539.62 : x
  2. Step 2: Convert to fraction form
    11,859.58/17,789.19 = 3,539.62/x
  3. Step 3: Cross multiply
    11,859.58x = 17,789.19 × 3,539.62
  4. Step 4: Simplify right side
    11,859.58x = 62,966,972.71
  5. Step 5: Solve for x
    x = 62,966,972.71/11,859.58
  6. Step 6: Final answer
    x = 5,309.38

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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.