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Finding the Fourth Proportional to 75,481.40, 113,003.40 and 73,294.40

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Solution

The fourth proportional to 75,481.40, 113,003.40 and 73,294.40 is: 109,729.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,481.40 : 113,003.40 = 73,294.40 : x
  2. Step 2: Convert to fraction form
    75,481.40/113,003.40 = 73,294.40/x
  3. Step 3: Cross multiply
    75,481.40x = 113,003.40 × 73,294.40
  4. Step 4: Simplify right side
    75,481.40x = 8,282,516,400.96
  5. Step 5: Solve for x
    x = 8,282,516,400.96/75,481.40
  6. Step 6: Final answer
    x = 109,729.24

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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.