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Finding the Fourth Proportional to 91,138.50, 136,768.50 and 35,024.94

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Solution

The fourth proportional to 91,138.50, 136,768.50 and 35,024.94 is: 52,560.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,138.50 : 136,768.50 = 35,024.94 : x
  2. Step 2: Convert to fraction form
    91,138.50/136,768.50 = 35,024.94/x
  3. Step 3: Cross multiply
    91,138.50x = 136,768.50 × 35,024.94
  4. Step 4: Simplify right side
    91,138.50x = 4,790,308,506.39
  5. Step 5: Solve for x
    x = 4,790,308,506.39/91,138.50
  6. Step 6: Final answer
    x = 52,560.76

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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.