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Finding the Fourth Proportional to 496,783.58, 685,454.55 and 281,906.78

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Solution

The fourth proportional to 496,783.58, 685,454.55 and 281,906.78 is: 388,970.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,783.58 : 685,454.55 = 281,906.78 : x
  2. Step 2: Convert to fraction form
    496,783.58/685,454.55 = 281,906.78/x
  3. Step 3: Cross multiply
    496,783.58x = 685,454.55 × 281,906.78
  4. Step 4: Simplify right side
    496,783.58x = 193,234,285,026.85
  5. Step 5: Solve for x
    x = 193,234,285,026.85/496,783.58
  6. Step 6: Final answer
    x = 388,970.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.