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Finding the Fourth Proportional to 408,331.63, 613,060.59 and 281,671.52

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Solution

The fourth proportional to 408,331.63, 613,060.59 and 281,671.52 is: 422,895.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,331.63 : 613,060.59 = 281,671.52 : x
  2. Step 2: Convert to fraction form
    408,331.63/613,060.59 = 281,671.52/x
  3. Step 3: Cross multiply
    408,331.63x = 613,060.59 × 281,671.52
  4. Step 4: Simplify right side
    408,331.63x = 172,681,708,237.40
  5. Step 5: Solve for x
    x = 172,681,708,237.40/408,331.63
  6. Step 6: Final answer
    x = 422,895.75

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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.