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Finding the Fourth Proportional to 69,451.80, 95,840.31 and 42,589.98

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Solution

The fourth proportional to 69,451.80, 95,840.31 and 42,589.98 is: 58,772.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,451.80 : 95,840.31 = 42,589.98 : x
  2. Step 2: Convert to fraction form
    69,451.80/95,840.31 = 42,589.98/x
  3. Step 3: Cross multiply
    69,451.80x = 95,840.31 × 42,589.98
  4. Step 4: Simplify right side
    69,451.80x = 4,081,836,886.09
  5. Step 5: Solve for x
    x = 4,081,836,886.09/69,451.80
  6. Step 6: Final answer
    x = 58,772.23

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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.