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Finding the Fourth Proportional to 11,705.96, 17,558.96 and 3,914.80

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Solution

The fourth proportional to 11,705.96, 17,558.96 and 3,914.80 is: 5,872.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,705.96 : 17,558.96 = 3,914.80 : x
  2. Step 2: Convert to fraction form
    11,705.96/17,558.96 = 3,914.80/x
  3. Step 3: Cross multiply
    11,705.96x = 17,558.96 × 3,914.80
  4. Step 4: Simplify right side
    11,705.96x = 68,739,816.61
  5. Step 5: Solve for x
    x = 68,739,816.61/11,705.96
  6. Step 6: Final answer
    x = 5,872.21

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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.