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Finding the Fourth Proportional to 619,768.59, 855,282.30 and 344,126.95

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Solution

The fourth proportional to 619,768.59, 855,282.30 and 344,126.95 is: 474,896.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,768.59 : 855,282.30 = 344,126.95 : x
  2. Step 2: Convert to fraction form
    619,768.59/855,282.30 = 344,126.95/x
  3. Step 3: Cross multiply
    619,768.59x = 855,282.30 × 344,126.95
  4. Step 4: Simplify right side
    619,768.59x = 294,325,689,287.99
  5. Step 5: Solve for x
    x = 294,325,689,287.99/619,768.59
  6. Step 6: Final answer
    x = 474,896.10

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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.