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Finding the Fourth Proportional to 18,695.98, 25,800.94 and 10,198.25

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Solution

The fourth proportional to 18,695.98, 25,800.94 and 10,198.25 is: 14,073.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,695.98 : 25,800.94 = 10,198.25 : x
  2. Step 2: Convert to fraction form
    18,695.98/25,800.94 = 10,198.25/x
  3. Step 3: Cross multiply
    18,695.98x = 25,800.94 × 10,198.25
  4. Step 4: Simplify right side
    18,695.98x = 263,124,413.05
  5. Step 5: Solve for x
    x = 263,124,413.05/18,695.98
  6. Step 6: Final answer
    x = 14,073.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.