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Finding the Fourth Proportional to 519,651.18, 780,193.89 and 359,333.82

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Solution

The fourth proportional to 519,651.18, 780,193.89 and 359,333.82 is: 539,496.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,651.18 : 780,193.89 = 359,333.82 : x
  2. Step 2: Convert to fraction form
    519,651.18/780,193.89 = 359,333.82/x
  3. Step 3: Cross multiply
    519,651.18x = 780,193.89 × 359,333.82
  4. Step 4: Simplify right side
    519,651.18x = 280,350,050,834.36
  5. Step 5: Solve for x
    x = 280,350,050,834.36/519,651.18
  6. Step 6: Final answer
    x = 539,496.61

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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.