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Finding the Fourth Proportional to 74,806.74, 103,230.45 and 41,272.74

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Solution

The fourth proportional to 74,806.74, 103,230.45 and 41,272.74 is: 56,954.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,806.74 : 103,230.45 = 41,272.74 : x
  2. Step 2: Convert to fraction form
    74,806.74/103,230.45 = 41,272.74/x
  3. Step 3: Cross multiply
    74,806.74x = 103,230.45 × 41,272.74
  4. Step 4: Simplify right side
    74,806.74x = 4,260,603,522.93
  5. Step 5: Solve for x
    x = 4,260,603,522.93/74,806.74
  6. Step 6: Final answer
    x = 56,954.81

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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.