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Finding the Fourth Proportional to 205,843.16, 308,758.98 and 65,610.20

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Solution

The fourth proportional to 205,843.16, 308,758.98 and 65,610.20 is: 98,413.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,843.16 : 308,758.98 = 65,610.20 : x
  2. Step 2: Convert to fraction form
    205,843.16/308,758.98 = 65,610.20/x
  3. Step 3: Cross multiply
    205,843.16x = 308,758.98 × 65,610.20
  4. Step 4: Simplify right side
    205,843.16x = 20,257,738,429.60
  5. Step 5: Solve for x
    x = 20,257,738,429.60/205,843.16
  6. Step 6: Final answer
    x = 98,413.46

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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.