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Finding the Fourth Proportional to 681,063.80, 939,868.04 and 394,749.96

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Solution

The fourth proportional to 681,063.80, 939,868.04 and 394,749.96 is: 544,754.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,063.80 : 939,868.04 = 394,749.96 : x
  2. Step 2: Convert to fraction form
    681,063.80/939,868.04 = 394,749.96/x
  3. Step 3: Cross multiply
    681,063.80x = 939,868.04 × 394,749.96
  4. Step 4: Simplify right side
    681,063.80x = 371,012,871,195.28
  5. Step 5: Solve for x
    x = 371,012,871,195.28/681,063.80
  6. Step 6: Final answer
    x = 544,754.94

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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.