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Finding the Fourth Proportional to 619,660.64, 855,138.56 and 344,037.27

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Solution

The fourth proportional to 619,660.64, 855,138.56 and 344,037.27 is: 474,775.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,660.64 : 855,138.56 = 344,037.27 : x
  2. Step 2: Convert to fraction form
    619,660.64/855,138.56 = 344,037.27/x
  3. Step 3: Cross multiply
    619,660.64x = 855,138.56 × 344,037.27
  4. Step 4: Simplify right side
    619,660.64x = 294,199,535,654.13
  5. Step 5: Solve for x
    x = 294,199,535,654.13/619,660.64
  6. Step 6: Final answer
    x = 474,775.25

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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.