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Finding the Fourth Proportional to 135,906.60, 203,762.70 and 60,965.40

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Solution

The fourth proportional to 135,906.60, 203,762.70 and 60,965.40 is: 91,404.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,906.60 : 203,762.70 = 60,965.40 : x
  2. Step 2: Convert to fraction form
    135,906.60/203,762.70 = 60,965.40/x
  3. Step 3: Cross multiply
    135,906.60x = 203,762.70 × 60,965.40
  4. Step 4: Simplify right side
    135,906.60x = 12,422,474,510.58
  5. Step 5: Solve for x
    x = 12,422,474,510.58/135,906.60
  6. Step 6: Final answer
    x = 91,404.50

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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.