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Finding the Fourth Proportional to 167,496.54, 251,040.42 and 78,631.44

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Solution

The fourth proportional to 167,496.54, 251,040.42 and 78,631.44 is: 117,851.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,496.54 : 251,040.42 = 78,631.44 : x
  2. Step 2: Convert to fraction form
    167,496.54/251,040.42 = 78,631.44/x
  3. Step 3: Cross multiply
    167,496.54x = 251,040.42 × 78,631.44
  4. Step 4: Simplify right side
    167,496.54x = 19,739,669,722.80
  5. Step 5: Solve for x
    x = 19,739,669,722.80/167,496.54
  6. Step 6: Final answer
    x = 117,851.21

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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.