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Finding the Fourth Proportional to 263,274.90, 394,912.35 and 156,986.70

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Solution

The fourth proportional to 263,274.90, 394,912.35 and 156,986.70 is: 235,480.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,274.90 : 394,912.35 = 156,986.70 : x
  2. Step 2: Convert to fraction form
    263,274.90/394,912.35 = 156,986.70/x
  3. Step 3: Cross multiply
    263,274.90x = 394,912.35 × 156,986.70
  4. Step 4: Simplify right side
    263,274.90x = 61,995,986,615.75
  5. Step 5: Solve for x
    x = 61,995,986,615.75/263,274.90
  6. Step 6: Final answer
    x = 235,480.05

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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.