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Finding the Fourth Proportional to 9,605.64, 13,255.62 and 5,413.92

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Solution

The fourth proportional to 9,605.64, 13,255.62 and 5,413.92 is: 7,471.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,605.64 : 13,255.62 = 5,413.92 : x
  2. Step 2: Convert to fraction form
    9,605.64/13,255.62 = 5,413.92/x
  3. Step 3: Cross multiply
    9,605.64x = 13,255.62 × 5,413.92
  4. Step 4: Simplify right side
    9,605.64x = 71,764,866.23
  5. Step 5: Solve for x
    x = 71,764,866.23/9,605.64
  6. Step 6: Final answer
    x = 7,471.12

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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.