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Finding the Fourth Proportional to 511,324.87, 766,987.29 and 195,781.76

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Solution

The fourth proportional to 511,324.87, 766,987.29 and 195,781.76 is: 293,672.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,324.87 : 766,987.29 = 195,781.76 : x
  2. Step 2: Convert to fraction form
    511,324.87/766,987.29 = 195,781.76/x
  3. Step 3: Cross multiply
    511,324.87x = 766,987.29 × 195,781.76
  4. Step 4: Simplify right side
    511,324.87x = 150,162,121,533.83
  5. Step 5: Solve for x
    x = 150,162,121,533.83/511,324.87
  6. Step 6: Final answer
    x = 293,672.64

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Double scale
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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.