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Finding the Fourth Proportional to 2,832,676.94, 3,908,971.91 and 1,608,978.65

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Solution

The fourth proportional to 2,832,676.94, 3,908,971.91 and 1,608,978.65 is: 2,220,321.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,832,676.94 : 3,908,971.91 = 1,608,978.65 : x
  2. Step 2: Convert to fraction form
    2,832,676.94/3,908,971.91 = 1,608,978.65/x
  3. Step 3: Cross multiply
    2,832,676.94x = 3,908,971.91 × 1,608,978.65
  4. Step 4: Simplify right side
    2,832,676.94x = 6,289,452,331,117.31
  5. Step 5: Solve for x
    x = 6,289,452,331,117.31/2,832,676.94
  6. Step 6: Final answer
    x = 2,220,321.08

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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.