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Finding the Fourth Proportional to 18,338.76, 27,508.14 and 6,651.98

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Solution

The fourth proportional to 18,338.76, 27,508.14 and 6,651.98 is: 9,977.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,338.76 : 27,508.14 = 6,651.98 : x
  2. Step 2: Convert to fraction form
    18,338.76/27,508.14 = 6,651.98/x
  3. Step 3: Cross multiply
    18,338.76x = 27,508.14 × 6,651.98
  4. Step 4: Simplify right side
    18,338.76x = 182,983,597.12
  5. Step 5: Solve for x
    x = 182,983,597.12/18,338.76
  6. Step 6: Final answer
    x = 9,977.97

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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.