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Finding the Fourth Proportional to 18,796.68, 25,936.80 and 10,413.72

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Solution

The fourth proportional to 18,796.68, 25,936.80 and 10,413.72 is: 14,369.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,796.68 : 25,936.80 = 10,413.72 : x
  2. Step 2: Convert to fraction form
    18,796.68/25,936.80 = 10,413.72/x
  3. Step 3: Cross multiply
    18,796.68x = 25,936.80 × 10,413.72
  4. Step 4: Simplify right side
    18,796.68x = 270,098,572.90
  5. Step 5: Solve for x
    x = 270,098,572.90/18,796.68
  6. Step 6: Final answer
    x = 14,369.48

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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.