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Finding the Fourth Proportional to 208,593.93, 312,705.30 and 75,444.57

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Solution

The fourth proportional to 208,593.93, 312,705.30 and 75,444.57 is: 113,099.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,593.93 : 312,705.30 = 75,444.57 : x
  2. Step 2: Convert to fraction form
    208,593.93/312,705.30 = 75,444.57/x
  3. Step 3: Cross multiply
    208,593.93x = 312,705.30 × 75,444.57
  4. Step 4: Simplify right side
    208,593.93x = 23,591,916,895.22
  5. Step 5: Solve for x
    x = 23,591,916,895.22/208,593.93
  6. Step 6: Final answer
    x = 113,099.73

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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.