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Finding the Fourth Proportional to 677,906.78, 935,506.68 and 376,100.78

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Solution

The fourth proportional to 677,906.78, 935,506.68 and 376,100.78 is: 519,016.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,906.78 : 935,506.68 = 376,100.78 : x
  2. Step 2: Convert to fraction form
    677,906.78/935,506.68 = 376,100.78/x
  3. Step 3: Cross multiply
    677,906.78x = 935,506.68 × 376,100.78
  4. Step 4: Simplify right side
    677,906.78x = 351,844,792,043.21
  5. Step 5: Solve for x
    x = 351,844,792,043.21/677,906.78
  6. Step 6: Final answer
    x = 519,016.48

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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.