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Finding the Fourth Proportional to 619,829.34, 855,293.91 and 347,860.38

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Solution

The fourth proportional to 619,829.34, 855,293.91 and 347,860.38 is: 480,007.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,829.34 : 855,293.91 = 347,860.38 : x
  2. Step 2: Convert to fraction form
    619,829.34/855,293.91 = 347,860.38/x
  3. Step 3: Cross multiply
    619,829.34x = 855,293.91 × 347,860.38
  4. Step 4: Simplify right side
    619,829.34x = 297,522,864,544.29
  5. Step 5: Solve for x
    x = 297,522,864,544.29/619,829.34
  6. Step 6: Final answer
    x = 480,007.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.