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Finding the Fourth Proportional to 18,400.66, 27,601.44 and 6,713.88

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Solution

The fourth proportional to 18,400.66, 27,601.44 and 6,713.88 is: 10,070.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,400.66 : 27,601.44 = 6,713.88 : x
  2. Step 2: Convert to fraction form
    18,400.66/27,601.44 = 6,713.88/x
  3. Step 3: Cross multiply
    18,400.66x = 27,601.44 × 6,713.88
  4. Step 4: Simplify right side
    18,400.66x = 185,312,755.99
  5. Step 5: Solve for x
    x = 185,312,755.99/18,400.66
  6. Step 6: Final answer
    x = 10,070.98

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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.