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Finding the Third Proportional to 1,818,221.63 and 3,977,205.75

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Solution

The third proportional to 1,818,221.63 and 3,977,205.75 is: 8,699,800.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,818,221.63 : 3,977,205.75 = 3,977,205.75 : x
  2. Step 2: Convert to fraction form
    1,818,221.63/3,977,205.75 = 3,977,205.75/x
  3. Step 3: Cross multiply
    1,818,221.63x = 3,977,205.75 × 3,977,205.75
  4. Step 4: Simplify right side
    1,818,221.63x = 15,818,165,577,833.06
  5. Step 5: Solve for x
    x = 15,818,165,577,833.06/1,818,221.63
  6. Step 6: Final answer
    x = 8,699,800.60

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.