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Finding the Fourth Proportional to 67,956.36, 101,939.10 and 18,035.72

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Solution

The fourth proportional to 67,956.36, 101,939.10 and 18,035.72 is: 27,054.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,956.36 : 101,939.10 = 18,035.72 : x
  2. Step 2: Convert to fraction form
    67,956.36/101,939.10 = 18,035.72/x
  3. Step 3: Cross multiply
    67,956.36x = 101,939.10 × 18,035.72
  4. Step 4: Simplify right side
    67,956.36x = 1,838,545,064.65
  5. Step 5: Solve for x
    x = 1,838,545,064.65/67,956.36
  6. Step 6: Final answer
    x = 27,054.79

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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.