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Finding the Fourth Proportional to 260,893.05, 391,179.63 and 111,048.03

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Solution

The fourth proportional to 260,893.05, 391,179.63 and 111,048.03 is: 166,503.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,893.05 : 391,179.63 = 111,048.03 : x
  2. Step 2: Convert to fraction form
    260,893.05/391,179.63 = 111,048.03/x
  3. Step 3: Cross multiply
    260,893.05x = 391,179.63 × 111,048.03
  4. Step 4: Simplify right side
    260,893.05x = 43,439,727,287.63
  5. Step 5: Solve for x
    x = 43,439,727,287.63/260,893.05
  6. Step 6: Final answer
    x = 166,503.97

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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.