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Finding the Fourth Proportional to 3,876,271.48, 5,815,327.40 and 1,216,879.48

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Solution

The fourth proportional to 3,876,271.48, 5,815,327.40 and 1,216,879.48 is: 1,825,608.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,876,271.48 : 5,815,327.40 = 1,216,879.48 : x
  2. Step 2: Convert to fraction form
    3,876,271.48/5,815,327.40 = 1,216,879.48/x
  3. Step 3: Cross multiply
    3,876,271.48x = 5,815,327.40 × 1,216,879.48
  4. Step 4: Simplify right side
    3,876,271.48x = 7,076,552,582,541.75
  5. Step 5: Solve for x
    x = 7,076,552,582,541.75/3,876,271.48
  6. Step 6: Final answer
    x = 1,825,608.09

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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.