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Finding the Third Proportional to 1,212,099.75 and 1,807,638.47

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Solution

The third proportional to 1,212,099.75 and 1,807,638.47 is: 2,695,782.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212,099.75 : 1,807,638.47 = 1,807,638.47 : x
  2. Step 2: Convert to fraction form
    1,212,099.75/1,807,638.47 = 1,807,638.47/x
  3. Step 3: Cross multiply
    1,212,099.75x = 1,807,638.47 × 1,807,638.47
  4. Step 4: Simplify right side
    1,212,099.75x = 3,267,556,833,704.85
  5. Step 5: Solve for x
    x = 3,267,556,833,704.85/1,212,099.75
  6. Step 6: Final answer
    x = 2,695,782.12

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.