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Finding the Fourth Proportional to 18,628.52, 27,943.65 and 6,149.66

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Solution

The fourth proportional to 18,628.52, 27,943.65 and 6,149.66 is: 9,224.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,628.52 : 27,943.65 = 6,149.66 : x
  2. Step 2: Convert to fraction form
    18,628.52/27,943.65 = 6,149.66/x
  3. Step 3: Cross multiply
    18,628.52x = 27,943.65 × 6,149.66
  4. Step 4: Simplify right side
    18,628.52x = 171,843,806.94
  5. Step 5: Solve for x
    x = 171,843,806.94/18,628.52
  6. Step 6: Final answer
    x = 9,224.77

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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.