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Finding the Fourth Proportional to 73,952.80, 110,998.80 and 38,917.60

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Solution

The fourth proportional to 73,952.80, 110,998.80 and 38,917.60 is: 58,413.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,952.80 : 110,998.80 = 38,917.60 : x
  2. Step 2: Convert to fraction form
    73,952.80/110,998.80 = 38,917.60/x
  3. Step 3: Cross multiply
    73,952.80x = 110,998.80 × 38,917.60
  4. Step 4: Simplify right side
    73,952.80x = 4,319,806,898.88
  5. Step 5: Solve for x
    x = 4,319,806,898.88/73,952.80
  6. Step 6: Final answer
    x = 58,413.03

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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.