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Finding the Fourth Proportional to 90,007.66, 135,023.64 and 33,073.98

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Solution

The fourth proportional to 90,007.66, 135,023.64 and 33,073.98 is: 49,615.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,007.66 : 135,023.64 = 33,073.98 : x
  2. Step 2: Convert to fraction form
    90,007.66/135,023.64 = 33,073.98/x
  3. Step 3: Cross multiply
    90,007.66x = 135,023.64 × 33,073.98
  4. Step 4: Simplify right side
    90,007.66x = 4,465,769,168.89
  5. Step 5: Solve for x
    x = 4,465,769,168.89/90,007.66
  6. Step 6: Final answer
    x = 49,615.43

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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.