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Finding the Fourth Proportional to 18,661.42, 27,992.94 and 6,968.26

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Solution

The fourth proportional to 18,661.42, 27,992.94 and 6,968.26 is: 10,452.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,661.42 : 27,992.94 = 6,968.26 : x
  2. Step 2: Convert to fraction form
    18,661.42/27,992.94 = 6,968.26/x
  3. Step 3: Cross multiply
    18,661.42x = 27,992.94 × 6,968.26
  4. Step 4: Simplify right side
    18,661.42x = 195,062,084.08
  5. Step 5: Solve for x
    x = 195,062,084.08/18,661.42
  6. Step 6: Final answer
    x = 10,452.69

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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.