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Finding the Fourth Proportional to 156,127.98, 234,191.60 and 120,640.90

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Solution

The fourth proportional to 156,127.98, 234,191.60 and 120,640.90 is: 180,961.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,127.98 : 234,191.60 = 120,640.90 : x
  2. Step 2: Convert to fraction form
    156,127.98/234,191.60 = 120,640.90/x
  3. Step 3: Cross multiply
    156,127.98x = 234,191.60 × 120,640.90
  4. Step 4: Simplify right side
    156,127.98x = 28,253,085,396.44
  5. Step 5: Solve for x
    x = 28,253,085,396.44/156,127.98
  6. Step 6: Final answer
    x = 180,961.06

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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.