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Finding the Fourth Proportional to 670,406.49, 925,164.57 and 394,776.30

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Solution

The fourth proportional to 670,406.49, 925,164.57 and 394,776.30 is: 544,793.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,406.49 : 925,164.57 = 394,776.30 : x
  2. Step 2: Convert to fraction form
    670,406.49/925,164.57 = 394,776.30/x
  3. Step 3: Cross multiply
    670,406.49x = 925,164.57 × 394,776.30
  4. Step 4: Simplify right side
    670,406.49x = 365,233,045,835.69
  5. Step 5: Solve for x
    x = 365,233,045,835.69/670,406.49
  6. Step 6: Final answer
    x = 544,793.42

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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.