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Finding the Fourth Proportional to 54,066.78, 81,114.74 and 48,861.72

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Solution

The fourth proportional to 54,066.78, 81,114.74 and 48,861.72 is: 73,305.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,066.78 : 81,114.74 = 48,861.72 : x
  2. Step 2: Convert to fraction form
    54,066.78/81,114.74 = 48,861.72/x
  3. Step 3: Cross multiply
    54,066.78x = 81,114.74 × 48,861.72
  4. Step 4: Simplify right side
    54,066.78x = 3,963,405,713.75
  5. Step 5: Solve for x
    x = 3,963,405,713.75/54,066.78
  6. Step 6: Final answer
    x = 73,305.75

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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.