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Finding the Fourth Proportional to 18,476.55, 27,698.22 and 6,786.90

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Solution

The fourth proportional to 18,476.55, 27,698.22 and 6,786.90 is: 10,174.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,476.55 : 27,698.22 = 6,786.90 : x
  2. Step 2: Convert to fraction form
    18,476.55/27,698.22 = 6,786.90/x
  3. Step 3: Cross multiply
    18,476.55x = 27,698.22 × 6,786.90
  4. Step 4: Simplify right side
    18,476.55x = 187,985,049.32
  5. Step 5: Solve for x
    x = 187,985,049.32/18,476.55
  6. Step 6: Final answer
    x = 10,174.25

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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.