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Finding the Fourth Proportional to 54,361.86, 74,984.85 and 39,276.69

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Solution

The fourth proportional to 54,361.86, 74,984.85 and 39,276.69 is: 54,176.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,361.86 : 74,984.85 = 39,276.69 : x
  2. Step 2: Convert to fraction form
    54,361.86/74,984.85 = 39,276.69/x
  3. Step 3: Cross multiply
    54,361.86x = 74,984.85 × 39,276.69
  4. Step 4: Simplify right side
    54,361.86x = 2,945,156,708.15
  5. Step 5: Solve for x
    x = 2,945,156,708.15/54,361.86
  6. Step 6: Final answer
    x = 54,176.89

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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.