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Finding the Fourth Proportional to 167,657.60, 251,597.19 and 78,936.48

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Solution

The fourth proportional to 167,657.60, 251,597.19 and 78,936.48 is: 118,456.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,657.60 : 251,597.19 = 78,936.48 : x
  2. Step 2: Convert to fraction form
    167,657.60/251,597.19 = 78,936.48/x
  3. Step 3: Cross multiply
    167,657.60x = 251,597.19 × 78,936.48
  4. Step 4: Simplify right side
    167,657.60x = 19,860,196,556.49
  5. Step 5: Solve for x
    x = 19,860,196,556.49/167,657.60
  6. Step 6: Final answer
    x = 118,456.89

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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.