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Finding the Fourth Proportional to 165,956.80, 248,906.40 and 60,721.60

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Solution

The fourth proportional to 165,956.80, 248,906.40 and 60,721.60 is: 91,071.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,956.80 : 248,906.40 = 60,721.60 : x
  2. Step 2: Convert to fraction form
    165,956.80/248,906.40 = 60,721.60/x
  3. Step 3: Cross multiply
    165,956.80x = 248,906.40 × 60,721.60
  4. Step 4: Simplify right side
    165,956.80x = 15,113,994,858.24
  5. Step 5: Solve for x
    x = 15,113,994,858.24/165,956.80
  6. Step 6: Final answer
    x = 91,071.86

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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.