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Finding the Fourth Proportional to 699,999.77, 965,949.60 and 394,060.34

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Solution

The fourth proportional to 699,999.77, 965,949.60 and 394,060.34 is: 543,775.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,999.77 : 965,949.60 = 394,060.34 : x
  2. Step 2: Convert to fraction form
    699,999.77/965,949.60 = 394,060.34/x
  3. Step 3: Cross multiply
    699,999.77x = 965,949.60 × 394,060.34
  4. Step 4: Simplify right side
    699,999.77x = 380,642,431,691.46
  5. Step 5: Solve for x
    x = 380,642,431,691.46/699,999.77
  6. Step 6: Final answer
    x = 543,775.08

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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.