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Finding the Fourth Proportional to 1,266,610.96, 1,747,889.25 and 722,736.86

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Solution

The fourth proportional to 1,266,610.96, 1,747,889.25 and 722,736.86 is: 997,357.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,266,610.96 : 1,747,889.25 = 722,736.86 : x
  2. Step 2: Convert to fraction form
    1,266,610.96/1,747,889.25 = 722,736.86/x
  3. Step 3: Cross multiply
    1,266,610.96x = 1,747,889.25 × 722,736.86
  4. Step 4: Simplify right side
    1,266,610.96x = 1,263,263,988,172.75
  5. Step 5: Solve for x
    x = 1,263,263,988,172.75/1,266,610.96
  6. Step 6: Final answer
    x = 997,357.54

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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.