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Finding the Fourth Proportional to 74,755.44, 103,161.69 and 40,763.81

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Solution

The fourth proportional to 74,755.44, 103,161.69 and 40,763.81 is: 56,253.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,755.44 : 103,161.69 = 40,763.81 : x
  2. Step 2: Convert to fraction form
    74,755.44/103,161.69 = 40,763.81/x
  3. Step 3: Cross multiply
    74,755.44x = 103,161.69 × 40,763.81
  4. Step 4: Simplify right side
    74,755.44x = 4,205,263,788.34
  5. Step 5: Solve for x
    x = 4,205,263,788.34/74,755.44
  6. Step 6: Final answer
    x = 56,253.62

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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.