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Finding the Fourth Proportional to 90,993.55, 136,477.68 and 34,847.79

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Solution

The fourth proportional to 90,993.55, 136,477.68 and 34,847.79 is: 52,266.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,993.55 : 136,477.68 = 34,847.79 : x
  2. Step 2: Convert to fraction form
    90,993.55/136,477.68 = 34,847.79/x
  3. Step 3: Cross multiply
    90,993.55x = 136,477.68 × 34,847.79
  4. Step 4: Simplify right side
    90,993.55x = 4,755,946,335.42
  5. Step 5: Solve for x
    x = 4,755,946,335.42/90,993.55
  6. Step 6: Final answer
    x = 52,266.85

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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.