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Finding the Fourth Proportional to 11,940.71, 17,908.74 and 11,348.01

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Solution

The fourth proportional to 11,940.71, 17,908.74 and 11,348.01 is: 17,019.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,940.71 : 17,908.74 = 11,348.01 : x
  2. Step 2: Convert to fraction form
    11,940.71/17,908.74 = 11,348.01/x
  3. Step 3: Cross multiply
    11,940.71x = 17,908.74 × 11,348.01
  4. Step 4: Simplify right side
    11,940.71x = 203,228,503.87
  5. Step 5: Solve for x
    x = 203,228,503.87/11,940.71
  6. Step 6: Final answer
    x = 17,019.80

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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.