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Finding the Fourth Proportional to 18,057.72, 27,103.14 and 11,495.64

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Solution

The fourth proportional to 18,057.72, 27,103.14 and 11,495.64 is: 17,254.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,057.72 : 27,103.14 = 11,495.64 : x
  2. Step 2: Convert to fraction form
    18,057.72/27,103.14 = 11,495.64/x
  3. Step 3: Cross multiply
    18,057.72x = 27,103.14 × 11,495.64
  4. Step 4: Simplify right side
    18,057.72x = 311,567,940.31
  5. Step 5: Solve for x
    x = 311,567,940.31/18,057.72
  6. Step 6: Final answer
    x = 17,254.00

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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.