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Finding the Fourth Proportional to 361,805.33, 499,210.89 and 208,811.09

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Solution

The fourth proportional to 361,805.33, 499,210.89 and 208,811.09 is: 288,112.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,805.33 : 499,210.89 = 208,811.09 : x
  2. Step 2: Convert to fraction form
    361,805.33/499,210.89 = 208,811.09/x
  3. Step 3: Cross multiply
    361,805.33x = 499,210.89 × 208,811.09
  4. Step 4: Simplify right side
    361,805.33x = 104,240,770,545.76
  5. Step 5: Solve for x
    x = 104,240,770,545.76/361,805.33
  6. Step 6: Final answer
    x = 288,112.86

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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.