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Finding the Fourth Proportional to 436,903.70, 655,355.55 and 394,913.30

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Solution

The fourth proportional to 436,903.70, 655,355.55 and 394,913.30 is: 592,369.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,903.70 : 655,355.55 = 394,913.30 : x
  2. Step 2: Convert to fraction form
    436,903.70/655,355.55 = 394,913.30/x
  3. Step 3: Cross multiply
    436,903.70x = 655,355.55 × 394,913.30
  4. Step 4: Simplify right side
    436,903.70x = 258,808,622,923.82
  5. Step 5: Solve for x
    x = 258,808,622,923.82/436,903.70
  6. Step 6: Final answer
    x = 592,369.95

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Similar ratio
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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.