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Finding the Fourth Proportional to 605,479.66, 908,218.94 and 285,556.90

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Solution

The fourth proportional to 605,479.66, 908,218.94 and 285,556.90 is: 428,335.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,479.66 : 908,218.94 = 285,556.90 : x
  2. Step 2: Convert to fraction form
    605,479.66/908,218.94 = 285,556.90/x
  3. Step 3: Cross multiply
    605,479.66x = 908,218.94 × 285,556.90
  4. Step 4: Simplify right side
    605,479.66x = 259,348,185,027.69
  5. Step 5: Solve for x
    x = 259,348,185,027.69/605,479.66
  6. Step 6: Final answer
    x = 428,335.09

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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.