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Finding the Fourth Proportional to 286,959.92, 396,488.52 and 206,226.81

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Solution

The fourth proportional to 286,959.92, 396,488.52 and 206,226.81 is: 284,940.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,959.92 : 396,488.52 = 206,226.81 : x
  2. Step 2: Convert to fraction form
    286,959.92/396,488.52 = 206,226.81/x
  3. Step 3: Cross multiply
    286,959.92x = 396,488.52 × 206,226.81
  4. Step 4: Simplify right side
    286,959.92x = 81,766,562,681.22
  5. Step 5: Solve for x
    x = 81,766,562,681.22/286,959.92
  6. Step 6: Final answer
    x = 284,940.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.