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Finding the Fourth Proportional to 551,428.78, 827,309.28 and 196,396.60

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Solution

The fourth proportional to 551,428.78, 827,309.28 and 196,396.60 is: 294,654.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,428.78 : 827,309.28 = 196,396.60 : x
  2. Step 2: Convert to fraction form
    551,428.78/827,309.28 = 196,396.60/x
  3. Step 3: Cross multiply
    551,428.78x = 827,309.28 × 196,396.60
  4. Step 4: Simplify right side
    551,428.78x = 162,480,729,740.45
  5. Step 5: Solve for x
    x = 162,480,729,740.45/551,428.78
  6. Step 6: Final answer
    x = 294,654.06

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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.