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Finding the Fourth Proportional to 568,394.39, 784,384.13 and 313,745.51

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Solution

The fourth proportional to 568,394.39, 784,384.13 and 313,745.51 is: 432,968.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,394.39 : 784,384.13 = 313,745.51 : x
  2. Step 2: Convert to fraction form
    568,394.39/784,384.13 = 313,745.51/x
  3. Step 3: Cross multiply
    568,394.39x = 784,384.13 × 313,745.51
  4. Step 4: Simplify right side
    568,394.39x = 246,096,993,412.11
  5. Step 5: Solve for x
    x = 246,096,993,412.11/568,394.39
  6. Step 6: Final answer
    x = 432,968.73

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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.