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Finding the Fourth Proportional to 681,114.82, 939,938.67 and 394,800.98

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Solution

The fourth proportional to 681,114.82, 939,938.67 and 394,800.98 is: 544,825.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,114.82 : 939,938.67 = 394,800.98 : x
  2. Step 2: Convert to fraction form
    681,114.82/939,938.67 = 394,800.98/x
  3. Step 3: Cross multiply
    681,114.82x = 939,938.67 × 394,800.98
  4. Step 4: Simplify right side
    681,114.82x = 371,088,703,356.20
  5. Step 5: Solve for x
    x = 371,088,703,356.20/681,114.82
  6. Step 6: Final answer
    x = 544,825.48

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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.