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Finding the Fourth Proportional to 447,891.68, 618,171 and 256,968.20

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Solution

The fourth proportional to 447,891.68, 618,171 and 256,968.20 is: 354,662.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,891.68 : 618,171 = 256,968.20 : x
  2. Step 2: Convert to fraction form
    447,891.68/618,171 = 256,968.20/x
  3. Step 3: Cross multiply
    447,891.68x = 618,171 × 256,968.20
  4. Step 4: Simplify right side
    447,891.68x = 158,850,289,162.20
  5. Step 5: Solve for x
    x = 158,850,289,162.20/447,891.68
  6. Step 6: Final answer
    x = 354,662.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.