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Finding the Fourth Proportional to 207,640.75, 311,513.15 and 59,896.75

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Solution

The fourth proportional to 207,640.75, 311,513.15 and 59,896.75 is: 89,860.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,640.75 : 311,513.15 = 59,896.75 : x
  2. Step 2: Convert to fraction form
    207,640.75/311,513.15 = 59,896.75/x
  3. Step 3: Cross multiply
    207,640.75x = 311,513.15 × 59,896.75
  4. Step 4: Simplify right side
    207,640.75x = 18,658,624,967.78
  5. Step 5: Solve for x
    x = 18,658,624,967.78/207,640.75
  6. Step 6: Final answer
    x = 89,860.13

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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.