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Finding the Fourth Proportional to 511,786.77, 768,345.36 and 393,541.12

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Solution

The fourth proportional to 511,786.77, 768,345.36 and 393,541.12 is: 590,823.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,786.77 : 768,345.36 = 393,541.12 : x
  2. Step 2: Convert to fraction form
    511,786.77/768,345.36 = 393,541.12/x
  3. Step 3: Cross multiply
    511,786.77x = 768,345.36 × 393,541.12
  4. Step 4: Simplify right side
    511,786.77x = 302,375,493,521.20
  5. Step 5: Solve for x
    x = 302,375,493,521.20/511,786.77
  6. Step 6: Final answer
    x = 590,823.19

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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.