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Finding the Fourth Proportional to 670,405.73, 925,163.54 and 394,775.55

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Solution

The fourth proportional to 670,405.73, 925,163.54 and 394,775.55 is: 544,792.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,405.73 : 925,163.54 = 394,775.55 : x
  2. Step 2: Convert to fraction form
    670,405.73/925,163.54 = 394,775.55/x
  3. Step 3: Cross multiply
    670,405.73x = 925,163.54 × 394,775.55
  4. Step 4: Simplify right side
    670,405.73x = 365,231,943,369.57
  5. Step 5: Solve for x
    x = 365,231,943,369.57/670,405.73
  6. Step 6: Final answer
    x = 544,792.40

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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.