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Finding the Fourth Proportional to 1,203,949, 1,661,449.62 and 694,651.38

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Solution

The fourth proportional to 1,203,949, 1,661,449.62 and 694,651.38 is: 958,618.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,203,949 : 1,661,449.62 = 694,651.38 : x
  2. Step 2: Convert to fraction form
    1,203,949/1,661,449.62 = 694,651.38/x
  3. Step 3: Cross multiply
    1,203,949x = 1,661,449.62 × 694,651.38
  4. Step 4: Simplify right side
    1,203,949x = 1,154,128,271,333.48
  5. Step 5: Solve for x
    x = 1,154,128,271,333.48/1,203,949
  6. Step 6: Final answer
    x = 958,618.90

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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.