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Finding the Fourth Proportional to 253,586.20, 349,959.90 and 140,408.96

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Solution

The fourth proportional to 253,586.20, 349,959.90 and 140,408.96 is: 193,770.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,586.20 : 349,959.90 = 140,408.96 : x
  2. Step 2: Convert to fraction form
    253,586.20/349,959.90 = 140,408.96/x
  3. Step 3: Cross multiply
    253,586.20x = 349,959.90 × 140,408.96
  4. Step 4: Simplify right side
    253,586.20x = 49,137,505,600.70
  5. Step 5: Solve for x
    x = 49,137,505,600.70/253,586.20
  6. Step 6: Final answer
    x = 193,770.42

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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.