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Finding the Fourth Proportional to 18,797.12, 28,195.52 and 5,649.44

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Solution

The fourth proportional to 18,797.12, 28,195.52 and 5,649.44 is: 8,474.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,797.12 : 28,195.52 = 5,649.44 : x
  2. Step 2: Convert to fraction form
    18,797.12/28,195.52 = 5,649.44/x
  3. Step 3: Cross multiply
    18,797.12x = 28,195.52 × 5,649.44
  4. Step 4: Simplify right side
    18,797.12x = 159,288,898.51
  5. Step 5: Solve for x
    x = 159,288,898.51/18,797.12
  6. Step 6: Final answer
    x = 8,474.11

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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.