Home / 82,208.80-123,313.20-19,879.30

Finding the Fourth Proportional to 82,208.80, 123,313.20 and 19,879.30

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Solution

The fourth proportional to 82,208.80, 123,313.20 and 19,879.30 is: 29,818.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,208.80 : 123,313.20 = 19,879.30 : x
  2. Step 2: Convert to fraction form
    82,208.80/123,313.20 = 19,879.30/x
  3. Step 3: Cross multiply
    82,208.80x = 123,313.20 × 19,879.30
  4. Step 4: Simplify right side
    82,208.80x = 2,451,380,096.76
  5. Step 5: Solve for x
    x = 2,451,380,096.76/82,208.80
  6. Step 6: Final answer
    x = 29,818.95

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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.