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Finding the Fourth Proportional to 483,743.40, 725,760.90 and 259,211.40

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Solution

The fourth proportional to 483,743.40, 725,760.90 and 259,211.40 is: 388,895.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,743.40 : 725,760.90 = 259,211.40 : x
  2. Step 2: Convert to fraction form
    483,743.40/725,760.90 = 259,211.40/x
  3. Step 3: Cross multiply
    483,743.40x = 725,760.90 × 259,211.40
  4. Step 4: Simplify right side
    483,743.40x = 188,125,498,954.26
  5. Step 5: Solve for x
    x = 188,125,498,954.26/483,743.40
  6. Step 6: Final answer
    x = 388,895.23

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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.