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Finding the Fourth Proportional to 74,578.05, 102,917.70 and 41,044.05

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Solution

The fourth proportional to 74,578.05, 102,917.70 and 41,044.05 is: 56,640.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,578.05 : 102,917.70 = 41,044.05 : x
  2. Step 2: Convert to fraction form
    74,578.05/102,917.70 = 41,044.05/x
  3. Step 3: Cross multiply
    74,578.05x = 102,917.70 × 41,044.05
  4. Step 4: Simplify right side
    74,578.05x = 4,224,159,224.69
  5. Step 5: Solve for x
    x = 4,224,159,224.69/74,578.05
  6. Step 6: Final answer
    x = 56,640.78

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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.