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Finding the Fourth Proportional to 3,879,275.14, 5,819,395.79 and 1,320,293.44

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Solution

The fourth proportional to 3,879,275.14, 5,819,395.79 and 1,320,293.44 is: 1,980,604.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,879,275.14 : 5,819,395.79 = 1,320,293.44 : x
  2. Step 2: Convert to fraction form
    3,879,275.14/5,819,395.79 = 1,320,293.44/x
  3. Step 3: Cross multiply
    3,879,275.14x = 5,819,395.79 × 1,320,293.44
  4. Step 4: Simplify right side
    3,879,275.14x = 7,683,310,086,300.62
  5. Step 5: Solve for x
    x = 7,683,310,086,300.62/3,879,275.14
  6. Step 6: Final answer
    x = 1,980,604.57

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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.