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Finding the Fourth Proportional to 18,464.11, 27,700.71 and 8,609.86

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Solution

The fourth proportional to 18,464.11, 27,700.71 and 8,609.86 is: 12,916.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,464.11 : 27,700.71 = 8,609.86 : x
  2. Step 2: Convert to fraction form
    18,464.11/27,700.71 = 8,609.86/x
  3. Step 3: Cross multiply
    18,464.11x = 27,700.71 × 8,609.86
  4. Step 4: Simplify right side
    18,464.11x = 238,499,235.00
  5. Step 5: Solve for x
    x = 238,499,235.00/18,464.11
  6. Step 6: Final answer
    x = 12,916.91

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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.