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Finding the Fourth Proportional to 198,861.13, 298,338.39 and 65,741.37

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Solution

The fourth proportional to 198,861.13, 298,338.39 and 65,741.37 is: 98,627.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,861.13 : 298,338.39 = 65,741.37 : x
  2. Step 2: Convert to fraction form
    198,861.13/298,338.39 = 65,741.37/x
  3. Step 3: Cross multiply
    198,861.13x = 298,338.39 × 65,741.37
  4. Step 4: Simplify right side
    198,861.13x = 19,613,175,041.58
  5. Step 5: Solve for x
    x = 19,613,175,041.58/198,861.13
  6. Step 6: Final answer
    x = 98,627.50

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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.