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Finding the Fourth Proportional to 18,418.25, 27,629.41 and 6,574.79

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Solution

The fourth proportional to 18,418.25, 27,629.41 and 6,574.79 is: 9,862.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,418.25 : 27,629.41 = 6,574.79 : x
  2. Step 2: Convert to fraction form
    18,418.25/27,629.41 = 6,574.79/x
  3. Step 3: Cross multiply
    18,418.25x = 27,629.41 × 6,574.79
  4. Step 4: Simplify right side
    18,418.25x = 181,657,413.99
  5. Step 5: Solve for x
    x = 181,657,413.99/18,418.25
  6. Step 6: Final answer
    x = 9,862.91

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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.