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Finding the Fourth Proportional to 263,280.40, 394,920.60 and 197,184.40

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Solution

The fourth proportional to 263,280.40, 394,920.60 and 197,184.40 is: 295,776.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,280.40 : 394,920.60 = 197,184.40 : x
  2. Step 2: Convert to fraction form
    263,280.40/394,920.60 = 197,184.40/x
  3. Step 3: Cross multiply
    263,280.40x = 394,920.60 × 197,184.40
  4. Step 4: Simplify right side
    263,280.40x = 77,872,181,558.64
  5. Step 5: Solve for x
    x = 77,872,181,558.64/263,280.40
  6. Step 6: Final answer
    x = 295,776.60

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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.