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Finding the Fourth Proportional to 622.08, 930.83 and 519.11

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Solution

The fourth proportional to 622.08, 930.83 and 519.11 is: 776.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    622.08 : 930.83 = 519.11 : x
  2. Step 2: Convert to fraction form
    622.08/930.83 = 519.11/x
  3. Step 3: Cross multiply
    622.08x = 930.83 × 519.11
  4. Step 4: Simplify right side
    622.08x = 483,198.51
  5. Step 5: Solve for x
    x = 483,198.51/622.08
  6. Step 6: Final answer
    x = 776.75

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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.