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Finding the Fourth Proportional to 6,339,326.09, 8,738,563.10 and 3,887,390.48

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Solution

The fourth proportional to 6,339,326.09, 8,738,563.10 and 3,887,390.48 is: 5,358,646.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,339,326.09 : 8,738,563.10 = 3,887,390.48 : x
  2. Step 2: Convert to fraction form
    6,339,326.09/8,738,563.10 = 3,887,390.48/x
  3. Step 3: Cross multiply
    6,339,326.09x = 8,738,563.10 × 3,887,390.48
  4. Step 4: Simplify right side
    6,339,326.09x = 33,970,206,940,689.52
  5. Step 5: Solve for x
    x = 33,970,206,940,689.52/6,339,326.09
  6. Step 6: Final answer
    x = 5,358,646.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.