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Finding the Fourth Proportional to 18,811.00, 28,218.83 and 6,156.41

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Solution

The fourth proportional to 18,811.00, 28,218.83 and 6,156.41 is: 9,235.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,811.00 : 28,218.83 = 6,156.41 : x
  2. Step 2: Convert to fraction form
    18,811.00/28,218.83 = 6,156.41/x
  3. Step 3: Cross multiply
    18,811.00x = 28,218.83 × 6,156.41
  4. Step 4: Simplify right side
    18,811.00x = 173,726,773.14
  5. Step 5: Solve for x
    x = 173,726,773.14/18,811.00
  6. Step 6: Final answer
    x = 9,235.38

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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.