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Finding the Fourth Proportional to 339,390.27, 509,299.80 and 189,728.73

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Solution

The fourth proportional to 339,390.27, 509,299.80 and 189,728.73 is: 284,712.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,390.27 : 509,299.80 = 189,728.73 : x
  2. Step 2: Convert to fraction form
    339,390.27/509,299.80 = 189,728.73/x
  3. Step 3: Cross multiply
    339,390.27x = 509,299.80 × 189,728.73
  4. Step 4: Simplify right side
    339,390.27x = 96,628,804,243.25
  5. Step 5: Solve for x
    x = 96,628,804,243.25/339,390.27
  6. Step 6: Final answer
    x = 284,712.95

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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.