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Finding the Fourth Proportional to 619,781.82, 855,262.98 and 347,824.32

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Solution

The fourth proportional to 619,781.82, 855,262.98 and 347,824.32 is: 479,977.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,781.82 : 855,262.98 = 347,824.32 : x
  2. Step 2: Convert to fraction form
    619,781.82/855,262.98 = 347,824.32/x
  3. Step 3: Cross multiply
    619,781.82x = 855,262.98 × 347,824.32
  4. Step 4: Simplify right side
    619,781.82x = 297,481,264,439.67
  5. Step 5: Solve for x
    x = 297,481,264,439.67/619,781.82
  6. Step 6: Final answer
    x = 479,977.40

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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.