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Finding the Fourth Proportional to 54,821.80, 74,067.75 and 54,821.80

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Solution

The fourth proportional to 54,821.80, 74,067.75 and 54,821.80 is: 74,067.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,821.80 : 74,067.75 = 54,821.80 : x
  2. Step 2: Convert to fraction form
    54,821.80/74,067.75 = 54,821.80/x
  3. Step 3: Cross multiply
    54,821.80x = 74,067.75 × 54,821.80
  4. Step 4: Simplify right side
    54,821.80x = 4,060,527,376.95
  5. Step 5: Solve for x
    x = 4,060,527,376.95/54,821.80
  6. Step 6: Final answer
    x = 74,067.75

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.