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Finding the Fourth Proportional to 322,313.20, 482,886.60 and 262,826.80

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Solution

The fourth proportional to 322,313.20, 482,886.60 and 262,826.80 is: 393,764.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,313.20 : 482,886.60 = 262,826.80 : x
  2. Step 2: Convert to fraction form
    322,313.20/482,886.60 = 262,826.80/x
  3. Step 3: Cross multiply
    322,313.20x = 482,886.60 × 262,826.80
  4. Step 4: Simplify right side
    322,313.20x = 126,915,539,840.88
  5. Step 5: Solve for x
    x = 126,915,539,840.88/322,313.20
  6. Step 6: Final answer
    x = 393,764.64

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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.