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Finding the Fourth Proportional to 90,649.66, 135,973.92 and 35,245.66

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Solution

The fourth proportional to 90,649.66, 135,973.92 and 35,245.66 is: 52,868.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,649.66 : 135,973.92 = 35,245.66 : x
  2. Step 2: Convert to fraction form
    90,649.66/135,973.92 = 35,245.66/x
  3. Step 3: Cross multiply
    90,649.66x = 135,973.92 × 35,245.66
  4. Step 4: Simplify right side
    90,649.66x = 4,792,490,553.19
  5. Step 5: Solve for x
    x = 4,792,490,553.19/90,649.66
  6. Step 6: Final answer
    x = 52,868.27

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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.