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Finding the Fourth Proportional to 1,126.55, 1,556.04 and 796.46

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Solution

The fourth proportional to 1,126.55, 1,556.04 and 796.46 is: 1,100.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126.55 : 1,556.04 = 796.46 : x
  2. Step 2: Convert to fraction form
    1,126.55/1,556.04 = 796.46/x
  3. Step 3: Cross multiply
    1,126.55x = 1,556.04 × 796.46
  4. Step 4: Simplify right side
    1,126.55x = 1,239,315.84
  5. Step 5: Solve for x
    x = 1,239,315.84/1,126.55
  6. Step 6: Final answer
    x = 1,100.10

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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.