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Finding the Fourth Proportional to 539,381.10, 809,266.05 and 519,941.10

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Solution

The fourth proportional to 539,381.10, 809,266.05 and 519,941.10 is: 780,099.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,381.10 : 809,266.05 = 519,941.10 : x
  2. Step 2: Convert to fraction form
    539,381.10/809,266.05 = 519,941.10/x
  3. Step 3: Cross multiply
    539,381.10x = 809,266.05 × 519,941.10
  4. Step 4: Simplify right side
    539,381.10x = 420,770,680,229.66
  5. Step 5: Solve for x
    x = 420,770,680,229.66/539,381.10
  6. Step 6: Final answer
    x = 780,099.04

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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.