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Finding the Fourth Proportional to 1,315,738.89, 1,972,986.26 and 605,556.81

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Solution

The fourth proportional to 1,315,738.89, 1,972,986.26 and 605,556.81 is: 908,048.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,738.89 : 1,972,986.26 = 605,556.81 : x
  2. Step 2: Convert to fraction form
    1,315,738.89/1,972,986.26 = 605,556.81/x
  3. Step 3: Cross multiply
    1,315,738.89x = 1,972,986.26 × 605,556.81
  4. Step 4: Simplify right side
    1,315,738.89x = 1,194,755,262,751.65
  5. Step 5: Solve for x
    x = 1,194,755,262,751.65/1,315,738.89
  6. Step 6: Final answer
    x = 908,048.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.