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Finding the Fourth Proportional to 619,828.84, 855,293.22 and 347,859.88

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Solution

The fourth proportional to 619,828.84, 855,293.22 and 347,859.88 is: 480,007.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,828.84 : 855,293.22 = 347,859.88 : x
  2. Step 2: Convert to fraction form
    619,828.84/855,293.22 = 347,859.88/x
  3. Step 3: Cross multiply
    619,828.84x = 855,293.22 × 347,859.88
  4. Step 4: Simplify right side
    619,828.84x = 297,522,196,874.01
  5. Step 5: Solve for x
    x = 297,522,196,874.01/619,828.84
  6. Step 6: Final answer
    x = 480,007.02

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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.