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Finding the Fourth Proportional to 408,833.40, 613,359.45 and 290,735.40

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Solution

The fourth proportional to 408,833.40, 613,359.45 and 290,735.40 is: 436,180.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,833.40 : 613,359.45 = 290,735.40 : x
  2. Step 2: Convert to fraction form
    408,833.40/613,359.45 = 290,735.40/x
  3. Step 3: Cross multiply
    408,833.40x = 613,359.45 × 290,735.40
  4. Step 4: Simplify right side
    408,833.40x = 178,325,305,039.53
  5. Step 5: Solve for x
    x = 178,325,305,039.53/408,833.40
  6. Step 6: Final answer
    x = 436,180.86

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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.