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Finding the Fourth Proportional to 492,115.70, 738,173.55 and 403,469.30

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Solution

The fourth proportional to 492,115.70, 738,173.55 and 403,469.30 is: 605,203.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,115.70 : 738,173.55 = 403,469.30 : x
  2. Step 2: Convert to fraction form
    492,115.70/738,173.55 = 403,469.30/x
  3. Step 3: Cross multiply
    492,115.70x = 738,173.55 × 403,469.30
  4. Step 4: Simplify right side
    492,115.70x = 297,830,365,497.02
  5. Step 5: Solve for x
    x = 297,830,365,497.02/492,115.70
  6. Step 6: Final answer
    x = 605,203.95

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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.