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Finding the Fourth Proportional to 198,774.30, 298,190.97 and 65,668.62

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Solution

The fourth proportional to 198,774.30, 298,190.97 and 65,668.62 is: 98,512.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,774.30 : 298,190.97 = 65,668.62 : x
  2. Step 2: Convert to fraction form
    198,774.30/298,190.97 = 65,668.62/x
  3. Step 3: Cross multiply
    198,774.30x = 298,190.97 × 65,668.62
  4. Step 4: Simplify right side
    198,774.30x = 19,581,789,496.36
  5. Step 5: Solve for x
    x = 19,581,789,496.36/198,774.30
  6. Step 6: Final answer
    x = 98,512.68

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1.5x scale

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.