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Finding the Fourth Proportional to 131,413.70, 197,189.40 and 60,357.80

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Solution

The fourth proportional to 131,413.70, 197,189.40 and 60,357.80 is: 90,568.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,413.70 : 197,189.40 = 60,357.80 : x
  2. Step 2: Convert to fraction form
    131,413.70/197,189.40 = 60,357.80/x
  3. Step 3: Cross multiply
    131,413.70x = 197,189.40 × 60,357.80
  4. Step 4: Simplify right side
    131,413.70x = 11,901,918,367.32
  5. Step 5: Solve for x
    x = 11,901,918,367.32/131,413.70
  6. Step 6: Final answer
    x = 90,568.32

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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.