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Finding the Fourth Proportional to 11,705.58, 17,558.28 and 3,914.31

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Solution

The fourth proportional to 11,705.58, 17,558.28 and 3,914.31 is: 5,871.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,705.58 : 17,558.28 = 3,914.31 : x
  2. Step 2: Convert to fraction form
    11,705.58/17,558.28 = 3,914.31/x
  3. Step 3: Cross multiply
    11,705.58x = 17,558.28 × 3,914.31
  4. Step 4: Simplify right side
    11,705.58x = 68,728,550.99
  5. Step 5: Solve for x
    x = 68,728,550.99/11,705.58
  6. Step 6: Final answer
    x = 5,871.43

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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.