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Finding the Third Proportional to 1,131,243.75 and 1,582,390.13

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Solution

The third proportional to 1,131,243.75 and 1,582,390.13 is: 2,213,456.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,131,243.75 : 1,582,390.13 = 1,582,390.13 : x
  2. Step 2: Convert to fraction form
    1,131,243.75/1,582,390.13 = 1,582,390.13/x
  3. Step 3: Cross multiply
    1,131,243.75x = 1,582,390.13 × 1,582,390.13
  4. Step 4: Simplify right side
    1,131,243.75x = 2,503,958,507,697.52
  5. Step 5: Solve for x
    x = 2,503,958,507,697.52/1,131,243.75
  6. Step 6: Final answer
    x = 2,213,456.21

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.