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Finding the Fourth Proportional to 218,483.42, 327,789.93 and 68,744.39

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Solution

The fourth proportional to 218,483.42, 327,789.93 and 68,744.39 is: 103,136.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,483.42 : 327,789.93 = 68,744.39 : x
  2. Step 2: Convert to fraction form
    218,483.42/327,789.93 = 68,744.39/x
  3. Step 3: Cross multiply
    218,483.42x = 327,789.93 × 68,744.39
  4. Step 4: Simplify right side
    218,483.42x = 22,533,718,785.99
  5. Step 5: Solve for x
    x = 22,533,718,785.99/218,483.42
  6. Step 6: Final answer
    x = 103,136.97

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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.