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Finding the Fourth Proportional to 54,354.72, 74,983.69 and 36,213.87

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Solution

The fourth proportional to 54,354.72, 74,983.69 and 36,213.87 is: 49,957.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,354.72 : 74,983.69 = 36,213.87 : x
  2. Step 2: Convert to fraction form
    54,354.72/74,983.69 = 36,213.87/x
  3. Step 3: Cross multiply
    54,354.72x = 74,983.69 × 36,213.87
  4. Step 4: Simplify right side
    54,354.72x = 2,715,449,670.01
  5. Step 5: Solve for x
    x = 2,715,449,670.01/54,354.72
  6. Step 6: Final answer
    x = 49,957.93

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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.