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Finding the Fourth Proportional to 18,230.21, 27,339.95 and 9,340.05

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Solution

The fourth proportional to 18,230.21, 27,339.95 and 9,340.05 is: 14,007.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,230.21 : 27,339.95 = 9,340.05 : x
  2. Step 2: Convert to fraction form
    18,230.21/27,339.95 = 9,340.05/x
  3. Step 3: Cross multiply
    18,230.21x = 27,339.95 × 9,340.05
  4. Step 4: Simplify right side
    18,230.21x = 255,356,453.30
  5. Step 5: Solve for x
    x = 255,356,453.30/18,230.21
  6. Step 6: Final answer
    x = 14,007.33

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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.