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Finding the Fourth Proportional to 368,539.79, 552,944.88 and 155,361.38

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Solution

The fourth proportional to 368,539.79, 552,944.88 and 155,361.38 is: 233,099.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,539.79 : 552,944.88 = 155,361.38 : x
  2. Step 2: Convert to fraction form
    368,539.79/552,944.88 = 155,361.38/x
  3. Step 3: Cross multiply
    368,539.79x = 552,944.88 × 155,361.38
  4. Step 4: Simplify right side
    368,539.79x = 85,906,276,856.01
  5. Step 5: Solve for x
    x = 85,906,276,856.01/368,539.79
  6. Step 6: Final answer
    x = 233,099.06

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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.