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Finding the Fourth Proportional to 73,958.10, 111,010.05 and 36,560.40

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Solution

The fourth proportional to 73,958.10, 111,010.05 and 36,560.40 is: 54,876.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,958.10 : 111,010.05 = 36,560.40 : x
  2. Step 2: Convert to fraction form
    73,958.10/111,010.05 = 36,560.40/x
  3. Step 3: Cross multiply
    73,958.10x = 111,010.05 × 36,560.40
  4. Step 4: Simplify right side
    73,958.10x = 4,058,571,832.02
  5. Step 5: Solve for x
    x = 4,058,571,832.02/73,958.10
  6. Step 6: Final answer
    x = 54,876.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.