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Finding the Fourth Proportional to 367,628.90, 515,380.30 and 367,628.90

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Solution

The fourth proportional to 367,628.90, 515,380.30 and 367,628.90 is: 515,380.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,628.90 : 515,380.30 = 367,628.90 : x
  2. Step 2: Convert to fraction form
    367,628.90/515,380.30 = 367,628.90/x
  3. Step 3: Cross multiply
    367,628.90x = 515,380.30 × 367,628.90
  4. Step 4: Simplify right side
    367,628.90x = 189,468,692,770.67
  5. Step 5: Solve for x
    x = 189,468,692,770.67/367,628.90
  6. Step 6: Final answer
    x = 515,380.30

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.