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Finding the Fourth Proportional to 1,128.04, 1,553.86 and 941.47

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Solution

The fourth proportional to 1,128.04, 1,553.86 and 941.47 is: 1,296.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128.04 : 1,553.86 = 941.47 : x
  2. Step 2: Convert to fraction form
    1,128.04/1,553.86 = 941.47/x
  3. Step 3: Cross multiply
    1,128.04x = 1,553.86 × 941.47
  4. Step 4: Simplify right side
    1,128.04x = 1,462,912.57
  5. Step 5: Solve for x
    x = 1,462,912.57/1,128.04
  6. Step 6: Final answer
    x = 1,296.86

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.