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Finding the Fourth Proportional to 74,295.75, 102,529.94 and 40,761.75

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Solution

The fourth proportional to 74,295.75, 102,529.94 and 40,761.75 is: 56,252.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,295.75 : 102,529.94 = 40,761.75 : x
  2. Step 2: Convert to fraction form
    74,295.75/102,529.94 = 40,761.75/x
  3. Step 3: Cross multiply
    74,295.75x = 102,529.94 × 40,761.75
  4. Step 4: Simplify right side
    74,295.75x = 4,179,299,781.80
  5. Step 5: Solve for x
    x = 4,179,299,781.80/74,295.75
  6. Step 6: Final answer
    x = 56,252.21

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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.