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Finding the Fourth Proportional to 74,164.80, 111,279.60 and 34,701.60

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Solution

The fourth proportional to 74,164.80, 111,279.60 and 34,701.60 is: 52,067.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,164.80 : 111,279.60 = 34,701.60 : x
  2. Step 2: Convert to fraction form
    74,164.80/111,279.60 = 34,701.60/x
  3. Step 3: Cross multiply
    74,164.80x = 111,279.60 × 34,701.60
  4. Step 4: Simplify right side
    74,164.80x = 3,861,580,167.36
  5. Step 5: Solve for x
    x = 3,861,580,167.36/74,164.80
  6. Step 6: Final answer
    x = 52,067.56

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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.