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Finding the Fourth Proportional to 519,394.45, 779,338.40 and 359,716.11

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Solution

The fourth proportional to 519,394.45, 779,338.40 and 359,716.11 is: 539,745.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,394.45 : 779,338.40 = 359,716.11 : x
  2. Step 2: Convert to fraction form
    519,394.45/779,338.40 = 359,716.11/x
  3. Step 3: Cross multiply
    519,394.45x = 779,338.40 × 359,716.11
  4. Step 4: Simplify right side
    519,394.45x = 280,340,577,546.74
  5. Step 5: Solve for x
    x = 280,340,577,546.74/519,394.45
  6. Step 6: Final answer
    x = 539,745.04

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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.