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Finding the Fourth Proportional to 18,494.15, 27,745.33 and 8,628.04

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Solution

The fourth proportional to 18,494.15, 27,745.33 and 8,628.04 is: 12,943.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,494.15 : 27,745.33 = 8,628.04 : x
  2. Step 2: Convert to fraction form
    18,494.15/27,745.33 = 8,628.04/x
  3. Step 3: Cross multiply
    18,494.15x = 27,745.33 × 8,628.04
  4. Step 4: Simplify right side
    18,494.15x = 239,387,970.79
  5. Step 5: Solve for x
    x = 239,387,970.79/18,494.15
  6. Step 6: Final answer
    x = 12,943.98

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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.