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Finding the Fourth Proportional to 619,234.80, 928,852.20 and 264,260.40

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Solution

The fourth proportional to 619,234.80, 928,852.20 and 264,260.40 is: 396,390.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,234.80 : 928,852.20 = 264,260.40 : x
  2. Step 2: Convert to fraction form
    619,234.80/928,852.20 = 264,260.40/x
  3. Step 3: Cross multiply
    619,234.80x = 928,852.20 × 264,260.40
  4. Step 4: Simplify right side
    619,234.80x = 245,458,853,912.88
  5. Step 5: Solve for x
    x = 245,458,853,912.88/619,234.80
  6. Step 6: Final answer
    x = 396,390.60

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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.