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Finding the Fourth Proportional to 90,591.88, 135,835.50 and 35,123.08

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Solution

The fourth proportional to 90,591.88, 135,835.50 and 35,123.08 is: 52,664.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,591.88 : 135,835.50 = 35,123.08 : x
  2. Step 2: Convert to fraction form
    90,591.88/135,835.50 = 35,123.08/x
  3. Step 3: Cross multiply
    90,591.88x = 135,835.50 × 35,123.08
  4. Step 4: Simplify right side
    90,591.88x = 4,770,961,133.34
  5. Step 5: Solve for x
    x = 4,770,961,133.34/90,591.88
  6. Step 6: Final answer
    x = 52,664.34

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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.