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Finding the Fourth Proportional to 3,879,641.78, 5,819,462.74 and 1,183,980.82

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Solution

The fourth proportional to 3,879,641.78, 5,819,462.74 and 1,183,980.82 is: 1,775,971.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,879,641.78 : 5,819,462.74 = 1,183,980.82 : x
  2. Step 2: Convert to fraction form
    3,879,641.78/5,819,462.74 = 1,183,980.82/x
  3. Step 3: Cross multiply
    3,879,641.78x = 5,819,462.74 × 1,183,980.82
  4. Step 4: Simplify right side
    3,879,641.78x = 6,890,132,266,864.65
  5. Step 5: Solve for x
    x = 6,890,132,266,864.65/3,879,641.78
  6. Step 6: Final answer
    x = 1,775,971.25

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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.