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Finding the Fourth Proportional to 65,021.44, 89,736.89 and 36,728.95

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Solution

The fourth proportional to 65,021.44, 89,736.89 and 36,728.95 is: 50,690.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,021.44 : 89,736.89 = 36,728.95 : x
  2. Step 2: Convert to fraction form
    65,021.44/89,736.89 = 36,728.95/x
  3. Step 3: Cross multiply
    65,021.44x = 89,736.89 × 36,728.95
  4. Step 4: Simplify right side
    65,021.44x = 3,295,941,562.32
  5. Step 5: Solve for x
    x = 3,295,941,562.32/65,021.44
  6. Step 6: Final answer
    x = 50,690.07

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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.