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Finding the Fourth Proportional to 18,606.10, 27,908.70 and 11,204.95

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Solution

The fourth proportional to 18,606.10, 27,908.70 and 11,204.95 is: 16,807.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,606.10 : 27,908.70 = 11,204.95 : x
  2. Step 2: Convert to fraction form
    18,606.10/27,908.70 = 11,204.95/x
  3. Step 3: Cross multiply
    18,606.10x = 27,908.70 × 11,204.95
  4. Step 4: Simplify right side
    18,606.10x = 312,715,588.07
  5. Step 5: Solve for x
    x = 312,715,588.07/18,606.10
  6. Step 6: Final answer
    x = 16,807.15

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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.