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Finding the Fourth Proportional to 157,413.80, 236,120.70 and 63,986.60

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Solution

The fourth proportional to 157,413.80, 236,120.70 and 63,986.60 is: 95,979.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,413.80 : 236,120.70 = 63,986.60 : x
  2. Step 2: Convert to fraction form
    157,413.80/236,120.70 = 63,986.60/x
  3. Step 3: Cross multiply
    157,413.80x = 236,120.70 × 63,986.60
  4. Step 4: Simplify right side
    157,413.80x = 15,108,560,782.62
  5. Step 5: Solve for x
    x = 15,108,560,782.62/157,413.80
  6. Step 6: Final answer
    x = 95,979.90

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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.