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Finding the Fourth Proportional to 19,605.78, 29,413.62 and 5,754.78

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Solution

The fourth proportional to 19,605.78, 29,413.62 and 5,754.78 is: 8,633.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,605.78 : 29,413.62 = 5,754.78 : x
  2. Step 2: Convert to fraction form
    19,605.78/29,413.62 = 5,754.78/x
  3. Step 3: Cross multiply
    19,605.78x = 29,413.62 × 5,754.78
  4. Step 4: Simplify right side
    19,605.78x = 169,268,912.10
  5. Step 5: Solve for x
    x = 169,268,912.10/19,605.78
  6. Step 6: Final answer
    x = 8,633.62

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1.5x scale

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.