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Finding the Fourth Proportional to 18,340.60, 27,508.20 and 5,194.30

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Solution

The fourth proportional to 18,340.60, 27,508.20 and 5,194.30 is: 7,790.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,340.60 : 27,508.20 = 5,194.30 : x
  2. Step 2: Convert to fraction form
    18,340.60/27,508.20 = 5,194.30/x
  3. Step 3: Cross multiply
    18,340.60x = 27,508.20 × 5,194.30
  4. Step 4: Simplify right side
    18,340.60x = 142,885,843.26
  5. Step 5: Solve for x
    x = 142,885,843.26/18,340.60
  6. Step 6: Final answer
    x = 7,790.69

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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.