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Finding the Fourth Proportional to 19,606.36, 27,047.64 and 11,218

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Solution

The fourth proportional to 19,606.36, 27,047.64 and 11,218 is: 15,475.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,606.36 : 27,047.64 = 11,218 : x
  2. Step 2: Convert to fraction form
    19,606.36/27,047.64 = 11,218/x
  3. Step 3: Cross multiply
    19,606.36x = 27,047.64 × 11,218
  4. Step 4: Simplify right side
    19,606.36x = 303,420,425.52
  5. Step 5: Solve for x
    x = 303,420,425.52/19,606.36
  6. Step 6: Final answer
    x = 15,475.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.