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Finding the Fourth Proportional to 18,796.65, 28,198.24 and 6,317.90

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Solution

The fourth proportional to 18,796.65, 28,198.24 and 6,317.90 is: 9,477.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,796.65 : 28,198.24 = 6,317.90 : x
  2. Step 2: Convert to fraction form
    18,796.65/28,198.24 = 6,317.90/x
  3. Step 3: Cross multiply
    18,796.65x = 28,198.24 × 6,317.90
  4. Step 4: Simplify right side
    18,796.65x = 178,153,660.50
  5. Step 5: Solve for x
    x = 178,153,660.50/18,796.65
  6. Step 6: Final answer
    x = 9,477.95

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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.