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Finding the Fourth Proportional to 156,692.20, 234,692.70 and 135,956.20

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Solution

The fourth proportional to 156,692.20, 234,692.70 and 135,956.20 is: 203,634.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,692.20 : 234,692.70 = 135,956.20 : x
  2. Step 2: Convert to fraction form
    156,692.20/234,692.70 = 135,956.20/x
  3. Step 3: Cross multiply
    156,692.20x = 234,692.70 × 135,956.20
  4. Step 4: Simplify right side
    156,692.20x = 31,907,927,659.74
  5. Step 5: Solve for x
    x = 31,907,927,659.74/156,692.20
  6. Step 6: Final answer
    x = 203,634.44

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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.