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Finding the Fourth Proportional to 263,618.46, 395,548.14 and 143,495.46

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Solution

The fourth proportional to 263,618.46, 395,548.14 and 143,495.46 is: 215,308.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,618.46 : 395,548.14 = 143,495.46 : x
  2. Step 2: Convert to fraction form
    263,618.46/395,548.14 = 143,495.46/x
  3. Step 3: Cross multiply
    263,618.46x = 395,548.14 × 143,495.46
  4. Step 4: Simplify right side
    263,618.46x = 56,759,362,301.44
  5. Step 5: Solve for x
    x = 56,759,362,301.44/263,618.46
  6. Step 6: Final answer
    x = 215,308.75

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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.