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Finding the Fourth Proportional to 167,381.76, 251,081.28 and 42,723.84

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Solution

The fourth proportional to 167,381.76, 251,081.28 and 42,723.84 is: 64,087.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,381.76 : 251,081.28 = 42,723.84 : x
  2. Step 2: Convert to fraction form
    167,381.76/251,081.28 = 42,723.84/x
  3. Step 3: Cross multiply
    167,381.76x = 251,081.28 × 42,723.84
  4. Step 4: Simplify right side
    167,381.76x = 10,727,156,433.72
  5. Step 5: Solve for x
    x = 10,727,156,433.72/167,381.76
  6. Step 6: Final answer
    x = 64,087.97

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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.