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Finding the Fourth Proportional to 207,998.93, 311,999.30 and 65,844.90

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Solution

The fourth proportional to 207,998.93, 311,999.30 and 65,844.90 is: 98,767.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,998.93 : 311,999.30 = 65,844.90 : x
  2. Step 2: Convert to fraction form
    207,998.93/311,999.30 = 65,844.90/x
  3. Step 3: Cross multiply
    207,998.93x = 311,999.30 × 65,844.90
  4. Step 4: Simplify right side
    207,998.93x = 20,543,562,811.45
  5. Step 5: Solve for x
    x = 20,543,562,811.45/207,998.93
  6. Step 6: Final answer
    x = 98,767.64

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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.