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Finding the Fourth Proportional to 11,858.66, 17,790.53 and 3,539.33

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Solution

The fourth proportional to 11,858.66, 17,790.53 and 3,539.33 is: 5,309.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,858.66 : 17,790.53 = 3,539.33 : x
  2. Step 2: Convert to fraction form
    11,858.66/17,790.53 = 3,539.33/x
  3. Step 3: Cross multiply
    11,858.66x = 17,790.53 × 3,539.33
  4. Step 4: Simplify right side
    11,858.66x = 62,966,449.90
  5. Step 5: Solve for x
    x = 62,966,449.90/11,858.66
  6. Step 6: Final answer
    x = 5,309.75

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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.