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Finding the Fourth Proportional to 519,806.90, 779,969.55 and 295,339.70

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Solution

The fourth proportional to 519,806.90, 779,969.55 and 295,339.70 is: 443,156.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,806.90 : 779,969.55 = 295,339.70 : x
  2. Step 2: Convert to fraction form
    519,806.90/779,969.55 = 295,339.70/x
  3. Step 3: Cross multiply
    519,806.90x = 779,969.55 × 295,339.70
  4. Step 4: Simplify right side
    519,806.90x = 230,355,972,906.14
  5. Step 5: Solve for x
    x = 230,355,972,906.14/519,806.90
  6. Step 6: Final answer
    x = 443,156.82

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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.