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Finding the Fourth Proportional to 395,766.39, 593,712.64 and 143,021.30

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Solution

The fourth proportional to 395,766.39, 593,712.64 and 143,021.30 is: 214,554.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,766.39 : 593,712.64 = 143,021.30 : x
  2. Step 2: Convert to fraction form
    395,766.39/593,712.64 = 143,021.30/x
  3. Step 3: Cross multiply
    395,766.39x = 593,712.64 × 143,021.30
  4. Step 4: Simplify right side
    395,766.39x = 84,913,551,757.40
  5. Step 5: Solve for x
    x = 84,913,551,757.40/395,766.39
  6. Step 6: Final answer
    x = 214,554.73

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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.