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Finding the Fourth Proportional to 167,952.36, 251,989.92 and 78,036.60

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Solution

The fourth proportional to 167,952.36, 251,989.92 and 78,036.60 is: 117,083.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,952.36 : 251,989.92 = 78,036.60 : x
  2. Step 2: Convert to fraction form
    167,952.36/251,989.92 = 78,036.60/x
  3. Step 3: Cross multiply
    167,952.36x = 251,989.92 × 78,036.60
  4. Step 4: Simplify right side
    167,952.36x = 19,664,436,591.07
  5. Step 5: Solve for x
    x = 19,664,436,591.07/167,952.36
  6. Step 6: Final answer
    x = 117,083.42

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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.