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Finding the Fourth Proportional to 167,657.66, 251,597.28 and 78,936.54

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Solution

The fourth proportional to 167,657.66, 251,597.28 and 78,936.54 is: 118,456.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,657.66 : 251,597.28 = 78,936.54 : x
  2. Step 2: Convert to fraction form
    167,657.66/251,597.28 = 78,936.54/x
  3. Step 3: Cross multiply
    167,657.66x = 251,597.28 × 78,936.54
  4. Step 4: Simplify right side
    167,657.66x = 19,860,218,756.61
  5. Step 5: Solve for x
    x = 19,860,218,756.61/167,657.66
  6. Step 6: Final answer
    x = 118,456.97

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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.