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Finding the Fourth Proportional to 217,047.20, 325,570.80 and 154,061.60

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Solution

The fourth proportional to 217,047.20, 325,570.80 and 154,061.60 is: 231,092.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,047.20 : 325,570.80 = 154,061.60 : x
  2. Step 2: Convert to fraction form
    217,047.20/325,570.80 = 154,061.60/x
  3. Step 3: Cross multiply
    217,047.20x = 325,570.80 × 154,061.60
  4. Step 4: Simplify right side
    217,047.20x = 50,157,958,361.28
  5. Step 5: Solve for x
    x = 50,157,958,361.28/217,047.20
  6. Step 6: Final answer
    x = 231,092.40

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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.