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Finding the Fourth Proportional to 357,468.78, 536,202.74 and 91,229.33

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Solution

The fourth proportional to 357,468.78, 536,202.74 and 91,229.33 is: 136,843.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,468.78 : 536,202.74 = 91,229.33 : x
  2. Step 2: Convert to fraction form
    357,468.78/536,202.74 = 91,229.33/x
  3. Step 3: Cross multiply
    357,468.78x = 536,202.74 × 91,229.33
  4. Step 4: Simplify right side
    357,468.78x = 48,917,413,577.20
  5. Step 5: Solve for x
    x = 48,917,413,577.20/357,468.78
  6. Step 6: Final answer
    x = 136,843.88

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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.