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Finding the Fourth Proportional to 368,415.30, 552,914.55 and 143,883.30

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Solution

The fourth proportional to 368,415.30, 552,914.55 and 143,883.30 is: 215,938.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,415.30 : 552,914.55 = 143,883.30 : x
  2. Step 2: Convert to fraction form
    368,415.30/552,914.55 = 143,883.30/x
  3. Step 3: Cross multiply
    368,415.30x = 552,914.55 × 143,883.30
  4. Step 4: Simplify right side
    368,415.30x = 79,555,170,072.02
  5. Step 5: Solve for x
    x = 79,555,170,072.02/368,415.30
  6. Step 6: Final answer
    x = 215,938.83

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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.