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Finding the Fourth Proportional to 368,151.20, 551,449.20 and 305,943.20

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Solution

The fourth proportional to 368,151.20, 551,449.20 and 305,943.20 is: 458,268.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,151.20 : 551,449.20 = 305,943.20 : x
  2. Step 2: Convert to fraction form
    368,151.20/551,449.20 = 305,943.20/x
  3. Step 3: Cross multiply
    368,151.20x = 551,449.20 × 305,943.20
  4. Step 4: Simplify right side
    368,151.20x = 168,712,132,885.44
  5. Step 5: Solve for x
    x = 168,712,132,885.44/368,151.20
  6. Step 6: Final answer
    x = 458,268.59

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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.