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Finding the Fourth Proportional to 619,785.82, 855,268.50 and 347,828.32

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Solution

The fourth proportional to 619,785.82, 855,268.50 and 347,828.32 is: 479,982.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,785.82 : 855,268.50 = 347,828.32 : x
  2. Step 2: Convert to fraction form
    619,785.82/855,268.50 = 347,828.32/x
  3. Step 3: Cross multiply
    619,785.82x = 855,268.50 × 347,828.32
  4. Step 4: Simplify right side
    619,785.82x = 297,486,605,503.92
  5. Step 5: Solve for x
    x = 297,486,605,503.92/619,785.82
  6. Step 6: Final answer
    x = 479,982.92

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1.5x scale

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.