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Finding the Fourth Proportional to 207,662.54, 311,478.26 and 65,512.49

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Solution

The fourth proportional to 207,662.54, 311,478.26 and 65,512.49 is: 98,263.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,662.54 : 311,478.26 = 65,512.49 : x
  2. Step 2: Convert to fraction form
    207,662.54/311,478.26 = 65,512.49/x
  3. Step 3: Cross multiply
    207,662.54x = 311,478.26 × 65,512.49
  4. Step 4: Simplify right side
    207,662.54x = 20,405,716,844.60
  5. Step 5: Solve for x
    x = 20,405,716,844.60/207,662.54
  6. Step 6: Final answer
    x = 98,263.83

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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.