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Finding the Fourth Proportional to 64,919.70, 89,589.06 and 36,625.32

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Solution

The fourth proportional to 64,919.70, 89,589.06 and 36,625.32 is: 50,542.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,919.70 : 89,589.06 = 36,625.32 : x
  2. Step 2: Convert to fraction form
    64,919.70/89,589.06 = 36,625.32/x
  3. Step 3: Cross multiply
    64,919.70x = 89,589.06 × 36,625.32
  4. Step 4: Simplify right side
    64,919.70x = 3,281,227,991.00
  5. Step 5: Solve for x
    x = 3,281,227,991.00/64,919.70
  6. Step 6: Final answer
    x = 50,542.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.