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Finding the Fourth Proportional to 17,872.72, 26,795.06 and 11,285.06

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Solution

The fourth proportional to 17,872.72, 26,795.06 and 11,285.06 is: 16,918.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,872.72 : 26,795.06 = 11,285.06 : x
  2. Step 2: Convert to fraction form
    17,872.72/26,795.06 = 11,285.06/x
  3. Step 3: Cross multiply
    17,872.72x = 26,795.06 × 11,285.06
  4. Step 4: Simplify right side
    17,872.72x = 302,383,955.00
  5. Step 5: Solve for x
    x = 302,383,955.00/17,872.72
  6. Step 6: Final answer
    x = 16,918.75

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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.