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Finding the Fourth Proportional to 12,618, 18,914.22 and 6,048.90

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Solution

The fourth proportional to 12,618, 18,914.22 and 6,048.90 is: 9,067.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,618 : 18,914.22 = 6,048.90 : x
  2. Step 2: Convert to fraction form
    12,618/18,914.22 = 6,048.90/x
  3. Step 3: Cross multiply
    12,618x = 18,914.22 × 6,048.90
  4. Step 4: Simplify right side
    12,618x = 114,410,225.36
  5. Step 5: Solve for x
    x = 114,410,225.36/12,618
  6. Step 6: Final answer
    x = 9,067.22

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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.