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Finding the Fourth Proportional to 57,559.91, 79,400.81 and 47,917.94

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Solution

The fourth proportional to 57,559.91, 79,400.81 and 47,917.94 is: 66,100.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,559.91 : 79,400.81 = 47,917.94 : x
  2. Step 2: Convert to fraction form
    57,559.91/79,400.81 = 47,917.94/x
  3. Step 3: Cross multiply
    57,559.91x = 79,400.81 × 47,917.94
  4. Step 4: Simplify right side
    57,559.91x = 3,804,722,972.32
  5. Step 5: Solve for x
    x = 3,804,722,972.32/57,559.91
  6. Step 6: Final answer
    x = 66,100.23

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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.