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Finding the Fourth Proportional to 519,537.62, 778,617.50 and 266,807.90

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Solution

The fourth proportional to 519,537.62, 778,617.50 and 266,807.90 is: 399,858.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,537.62 : 778,617.50 = 266,807.90 : x
  2. Step 2: Convert to fraction form
    519,537.62/778,617.50 = 266,807.90/x
  3. Step 3: Cross multiply
    519,537.62x = 778,617.50 × 266,807.90
  4. Step 4: Simplify right side
    519,537.62x = 207,741,300,078.25
  5. Step 5: Solve for x
    x = 207,741,300,078.25/519,537.62
  6. Step 6: Final answer
    x = 399,858.05

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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.