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Finding the Fourth Proportional to 11,912.13, 17,868.95 and 4,014

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Solution

The fourth proportional to 11,912.13, 17,868.95 and 4,014 is: 6,021.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,912.13 : 17,868.95 = 4,014 : x
  2. Step 2: Convert to fraction form
    11,912.13/17,868.95 = 4,014/x
  3. Step 3: Cross multiply
    11,912.13x = 17,868.95 × 4,014
  4. Step 4: Simplify right side
    11,912.13x = 71,725,965.30
  5. Step 5: Solve for x
    x = 71,725,965.30/11,912.13
  6. Step 6: Final answer
    x = 6,021.25

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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.