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Finding the Fourth Proportional to 54,079.82, 74,629.70 and 29,880.71

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Solution

The fourth proportional to 54,079.82, 74,629.70 and 29,880.71 is: 41,235.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,079.82 : 74,629.70 = 29,880.71 : x
  2. Step 2: Convert to fraction form
    54,079.82/74,629.70 = 29,880.71/x
  3. Step 3: Cross multiply
    54,079.82x = 74,629.70 × 29,880.71
  4. Step 4: Simplify right side
    54,079.82x = 2,229,988,012.59
  5. Step 5: Solve for x
    x = 2,229,988,012.59/54,079.82
  6. Step 6: Final answer
    x = 41,235.12

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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.