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Finding the Fourth Proportional to 91,168.85, 136,659.90 and 34,994.41

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Solution

The fourth proportional to 91,168.85, 136,659.90 and 34,994.41 is: 52,455.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,168.85 : 136,659.90 = 34,994.41 : x
  2. Step 2: Convert to fraction form
    91,168.85/136,659.90 = 34,994.41/x
  3. Step 3: Cross multiply
    91,168.85x = 136,659.90 × 34,994.41
  4. Step 4: Simplify right side
    91,168.85x = 4,782,332,571.16
  5. Step 5: Solve for x
    x = 4,782,332,571.16/91,168.85
  6. Step 6: Final answer
    x = 52,455.77

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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.