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Finding the Fourth Proportional to 218,586.72, 327,878.26 and 60,814.72

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Solution

The fourth proportional to 218,586.72, 327,878.26 and 60,814.72 is: 91,221.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,586.72 : 327,878.26 = 60,814.72 : x
  2. Step 2: Convert to fraction form
    218,586.72/327,878.26 = 60,814.72/x
  3. Step 3: Cross multiply
    218,586.72x = 327,878.26 × 60,814.72
  4. Step 4: Simplify right side
    218,586.72x = 19,939,825,175.88
  5. Step 5: Solve for x
    x = 19,939,825,175.88/218,586.72
  6. Step 6: Final answer
    x = 91,221.57

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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.