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Finding the Fourth Proportional to 330,561.87, 495,551.99 and 131,022.32

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Solution

The fourth proportional to 330,561.87, 495,551.99 and 131,022.32 is: 196,418.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,561.87 : 495,551.99 = 131,022.32 : x
  2. Step 2: Convert to fraction form
    330,561.87/495,551.99 = 131,022.32/x
  3. Step 3: Cross multiply
    330,561.87x = 495,551.99 × 131,022.32
  4. Step 4: Simplify right side
    330,561.87x = 64,928,369,260.21
  5. Step 5: Solve for x
    x = 64,928,369,260.21/330,561.87
  6. Step 6: Final answer
    x = 196,418.21

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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.