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Finding the Fourth Proportional to 74,640.96, 102,999.86 and 41,106.96

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Solution

The fourth proportional to 74,640.96, 102,999.86 and 41,106.96 is: 56,725.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,640.96 : 102,999.86 = 41,106.96 : x
  2. Step 2: Convert to fraction form
    74,640.96/102,999.86 = 41,106.96/x
  3. Step 3: Cross multiply
    74,640.96x = 102,999.86 × 41,106.96
  4. Step 4: Simplify right side
    74,640.96x = 4,234,011,125.03
  5. Step 5: Solve for x
    x = 4,234,011,125.03/74,640.96
  6. Step 6: Final answer
    x = 56,725.04

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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.