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Finding the Fourth Proportional to 1,143,629.44, 1,573,573.44 and 938,926.24

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Solution

The fourth proportional to 1,143,629.44, 1,573,573.44 and 938,926.24 is: 1,291,912.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,143,629.44 : 1,573,573.44 = 938,926.24 : x
  2. Step 2: Convert to fraction form
    1,143,629.44/1,573,573.44 = 938,926.24/x
  3. Step 3: Cross multiply
    1,143,629.44x = 1,573,573.44 × 938,926.24
  4. Step 4: Simplify right side
    1,143,629.44x = 1,477,469,393,383.07
  5. Step 5: Solve for x
    x = 1,477,469,393,383.07/1,143,629.44
  6. Step 6: Final answer
    x = 1,291,912.70

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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.