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Finding the Fourth Proportional to 217,091.80, 325,637.70 and 195,664.60

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Solution

The fourth proportional to 217,091.80, 325,637.70 and 195,664.60 is: 293,496.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,091.80 : 325,637.70 = 195,664.60 : x
  2. Step 2: Convert to fraction form
    217,091.80/325,637.70 = 195,664.60/x
  3. Step 3: Cross multiply
    217,091.80x = 325,637.70 × 195,664.60
  4. Step 4: Simplify right side
    217,091.80x = 63,715,770,315.42
  5. Step 5: Solve for x
    x = 63,715,770,315.42/217,091.80
  6. Step 6: Final answer
    x = 293,496.90

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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.