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Finding the Fourth Proportional to 91,241.66, 125,734.07 and 69,755.67

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Solution

The fourth proportional to 91,241.66, 125,734.07 and 69,755.67 is: 96,125.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,241.66 : 125,734.07 = 69,755.67 : x
  2. Step 2: Convert to fraction form
    91,241.66/125,734.07 = 69,755.67/x
  3. Step 3: Cross multiply
    91,241.66x = 125,734.07 × 69,755.67
  4. Step 4: Simplify right side
    91,241.66x = 8,770,663,945.90
  5. Step 5: Solve for x
    x = 8,770,663,945.90/91,241.66
  6. Step 6: Final answer
    x = 96,125.66

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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.