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Finding the Fourth Proportional to 74,887.72, 103,344.42 and 41,353

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Solution

The fourth proportional to 74,887.72, 103,344.42 and 41,353 is: 57,066.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,887.72 : 103,344.42 = 41,353 : x
  2. Step 2: Convert to fraction form
    74,887.72/103,344.42 = 41,353/x
  3. Step 3: Cross multiply
    74,887.72x = 103,344.42 × 41,353
  4. Step 4: Simplify right side
    74,887.72x = 4,273,601,800.26
  5. Step 5: Solve for x
    x = 4,273,601,800.26/74,887.72
  6. Step 6: Final answer
    x = 57,066.79

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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.