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Finding the Fourth Proportional to 367,634.40, 515,388 and 367,634.40

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Solution

The fourth proportional to 367,634.40, 515,388 and 367,634.40 is: 515,388

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,634.40 : 515,388 = 367,634.40 : x
  2. Step 2: Convert to fraction form
    367,634.40/515,388 = 367,634.40/x
  3. Step 3: Cross multiply
    367,634.40x = 515,388 × 367,634.40
  4. Step 4: Simplify right side
    367,634.40x = 189,474,358,147.20
  5. Step 5: Solve for x
    x = 189,474,358,147.20/367,634.40
  6. Step 6: Final answer
    x = 515,388

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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.