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Finding the Fourth Proportional to 12,469.14, 18,698.18 and 4,672.46

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Solution

The fourth proportional to 12,469.14, 18,698.18 and 4,672.46 is: 7,006.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,469.14 : 18,698.18 = 4,672.46 : x
  2. Step 2: Convert to fraction form
    12,469.14/18,698.18 = 4,672.46/x
  3. Step 3: Cross multiply
    12,469.14x = 18,698.18 × 4,672.46
  4. Step 4: Simplify right side
    12,469.14x = 87,366,498.12
  5. Step 5: Solve for x
    x = 87,366,498.12/12,469.14
  6. Step 6: Final answer
    x = 7,006.62

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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.