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Finding the Fourth Proportional to 18,608.12, 27,914.97 and 5,458.94

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Solution

The fourth proportional to 18,608.12, 27,914.97 and 5,458.94 is: 8,189.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,608.12 : 27,914.97 = 5,458.94 : x
  2. Step 2: Convert to fraction form
    18,608.12/27,914.97 = 5,458.94/x
  3. Step 3: Cross multiply
    18,608.12x = 27,914.97 × 5,458.94
  4. Step 4: Simplify right side
    18,608.12x = 152,386,146.33
  5. Step 5: Solve for x
    x = 152,386,146.33/18,608.12
  6. Step 6: Final answer
    x = 8,189.23

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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.