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Finding the Fourth Proportional to 207,571.50, 311,357.25 and 67,330.14

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Solution

The fourth proportional to 207,571.50, 311,357.25 and 67,330.14 is: 100,995.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,571.50 : 311,357.25 = 67,330.14 : x
  2. Step 2: Convert to fraction form
    207,571.50/311,357.25 = 67,330.14/x
  3. Step 3: Cross multiply
    207,571.50x = 311,357.25 × 67,330.14
  4. Step 4: Simplify right side
    207,571.50x = 20,963,727,232.52
  5. Step 5: Solve for x
    x = 20,963,727,232.52/207,571.50
  6. Step 6: Final answer
    x = 100,995.21

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1.5x scale

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.