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Finding the Fourth Proportional to 410,105.20, 615,618.60 and 317,023.60

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Solution

The fourth proportional to 410,105.20, 615,618.60 and 317,023.60 is: 475,891.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    410,105.20 : 615,618.60 = 317,023.60 : x
  2. Step 2: Convert to fraction form
    410,105.20/615,618.60 = 317,023.60/x
  3. Step 3: Cross multiply
    410,105.20x = 615,618.60 × 317,023.60
  4. Step 4: Simplify right side
    410,105.20x = 195,165,624,798.96
  5. Step 5: Solve for x
    x = 195,165,624,798.96/410,105.20
  6. Step 6: Final answer
    x = 475,891.61

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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.