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Finding the Fourth Proportional to 90,551.16, 135,826.74 and 40,604.01

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Solution

The fourth proportional to 90,551.16, 135,826.74 and 40,604.01 is: 60,906.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,551.16 : 135,826.74 = 40,604.01 : x
  2. Step 2: Convert to fraction form
    90,551.16/135,826.74 = 40,604.01/x
  3. Step 3: Cross multiply
    90,551.16x = 135,826.74 × 40,604.01
  4. Step 4: Simplify right side
    90,551.16x = 5,515,110,309.23
  5. Step 5: Solve for x
    x = 5,515,110,309.23/90,551.16
  6. Step 6: Final answer
    x = 60,906.02

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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.