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Finding the Fourth Proportional to 115,381.72, 173,072.56 and 48,804.56

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Solution

The fourth proportional to 115,381.72, 173,072.56 and 48,804.56 is: 73,206.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,381.72 : 173,072.56 = 48,804.56 : x
  2. Step 2: Convert to fraction form
    115,381.72/173,072.56 = 48,804.56/x
  3. Step 3: Cross multiply
    115,381.72x = 173,072.56 × 48,804.56
  4. Step 4: Simplify right side
    115,381.72x = 8,446,730,138.87
  5. Step 5: Solve for x
    x = 8,446,730,138.87/115,381.72
  6. Step 6: Final answer
    x = 73,206.83

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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.