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Finding the Fourth Proportional to 681,097.41, 939,914.69 and 394,783.47

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Solution

The fourth proportional to 681,097.41, 939,914.69 and 394,783.47 is: 544,801.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,097.41 : 939,914.69 = 394,783.47 : x
  2. Step 2: Convert to fraction form
    681,097.41/939,914.69 = 394,783.47/x
  3. Step 3: Cross multiply
    681,097.41x = 939,914.69 × 394,783.47
  4. Step 4: Simplify right side
    681,097.41x = 371,062,780,848.26
  5. Step 5: Solve for x
    x = 371,062,780,848.26/681,097.41
  6. Step 6: Final answer
    x = 544,801.34

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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.