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Finding the Fourth Proportional to 74,943.36, 112,453.92 and 33,380.64

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Solution

The fourth proportional to 74,943.36, 112,453.92 and 33,380.64 is: 50,088.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,943.36 : 112,453.92 = 33,380.64 : x
  2. Step 2: Convert to fraction form
    74,943.36/112,453.92 = 33,380.64/x
  3. Step 3: Cross multiply
    74,943.36x = 112,453.92 × 33,380.64
  4. Step 4: Simplify right side
    74,943.36x = 3,753,783,820.11
  5. Step 5: Solve for x
    x = 3,753,783,820.11/74,943.36
  6. Step 6: Final answer
    x = 50,088.28

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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.