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Finding the Fourth Proportional to 74,806.78, 103,233.30 and 41,272.78

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Solution

The fourth proportional to 74,806.78, 103,233.30 and 41,272.78 is: 56,956.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,806.78 : 103,233.30 = 41,272.78 : x
  2. Step 2: Convert to fraction form
    74,806.78/103,233.30 = 41,272.78/x
  3. Step 3: Cross multiply
    74,806.78x = 103,233.30 × 41,272.78
  4. Step 4: Simplify right side
    74,806.78x = 4,260,725,279.57
  5. Step 5: Solve for x
    x = 4,260,725,279.57/74,806.78
  6. Step 6: Final answer
    x = 56,956.41

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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.