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Finding the Fourth Proportional to 18,628.01, 27,939.63 and 6,144.94

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Solution

The fourth proportional to 18,628.01, 27,939.63 and 6,144.94 is: 9,216.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,628.01 : 27,939.63 = 6,144.94 : x
  2. Step 2: Convert to fraction form
    18,628.01/27,939.63 = 6,144.94/x
  3. Step 3: Cross multiply
    18,628.01x = 27,939.63 × 6,144.94
  4. Step 4: Simplify right side
    18,628.01x = 171,687,290.47
  5. Step 5: Solve for x
    x = 171,687,290.47/18,628.01
  6. Step 6: Final answer
    x = 9,216.62

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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.