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Finding the Fourth Proportional to 18,209.95, 27,314.96 and 5,731.09

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Solution

The fourth proportional to 18,209.95, 27,314.96 and 5,731.09 is: 8,596.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,209.95 : 27,314.96 = 5,731.09 : x
  2. Step 2: Convert to fraction form
    18,209.95/27,314.96 = 5,731.09/x
  3. Step 3: Cross multiply
    18,209.95x = 27,314.96 × 5,731.09
  4. Step 4: Simplify right side
    18,209.95x = 156,544,397.16
  5. Step 5: Solve for x
    x = 156,544,397.16/18,209.95
  6. Step 6: Final answer
    x = 8,596.64

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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.