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Finding the Fourth Proportional to 74,906.72, 103,370.64 and 41,372

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Solution

The fourth proportional to 74,906.72, 103,370.64 and 41,372 is: 57,093.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,906.72 : 103,370.64 = 41,372 : x
  2. Step 2: Convert to fraction form
    74,906.72/103,370.64 = 41,372/x
  3. Step 3: Cross multiply
    74,906.72x = 103,370.64 × 41,372
  4. Step 4: Simplify right side
    74,906.72x = 4,276,650,118.08
  5. Step 5: Solve for x
    x = 4,276,650,118.08/74,906.72
  6. Step 6: Final answer
    x = 57,093.01

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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.