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Finding the Fourth Proportional to 17,956.50, 26,939.87 and 6,112.87

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Solution

The fourth proportional to 17,956.50, 26,939.87 and 6,112.87 is: 9,171.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,956.50 : 26,939.87 = 6,112.87 : x
  2. Step 2: Convert to fraction form
    17,956.50/26,939.87 = 6,112.87/x
  3. Step 3: Cross multiply
    17,956.50x = 26,939.87 × 6,112.87
  4. Step 4: Simplify right side
    17,956.50x = 164,679,923.13
  5. Step 5: Solve for x
    x = 164,679,923.13/17,956.50
  6. Step 6: Final answer
    x = 9,171.05

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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.