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Finding the Fourth Proportional to 414,523.40, 622,245.90 and 256,929.80

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Solution

The fourth proportional to 414,523.40, 622,245.90 and 256,929.80 is: 385,680.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,523.40 : 622,245.90 = 256,929.80 : x
  2. Step 2: Convert to fraction form
    414,523.40/622,245.90 = 256,929.80/x
  3. Step 3: Cross multiply
    414,523.40x = 622,245.90 × 256,929.80
  4. Step 4: Simplify right side
    414,523.40x = 159,873,514,637.82
  5. Step 5: Solve for x
    x = 159,873,514,637.82/414,523.40
  6. Step 6: Final answer
    x = 385,680.31

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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.