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Finding the Fourth Proportional to 494,191.38, 681,957.63 and 279,318.63

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Solution

The fourth proportional to 494,191.38, 681,957.63 and 279,318.63 is: 385,444.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,191.38 : 681,957.63 = 279,318.63 : x
  2. Step 2: Convert to fraction form
    494,191.38/681,957.63 = 279,318.63/x
  3. Step 3: Cross multiply
    494,191.38x = 681,957.63 × 279,318.63
  4. Step 4: Simplify right side
    494,191.38x = 190,483,469,650.98
  5. Step 5: Solve for x
    x = 190,483,469,650.98/494,191.38
  6. Step 6: Final answer
    x = 385,444.74

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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.