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Finding the Third Proportional to 1,918,515.38 and 4,159,734.75

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Solution

The third proportional to 1,918,515.38 and 4,159,734.75 is: 9,019,157.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,918,515.38 : 4,159,734.75 = 4,159,734.75 : x
  2. Step 2: Convert to fraction form
    1,918,515.38/4,159,734.75 = 4,159,734.75/x
  3. Step 3: Cross multiply
    1,918,515.38x = 4,159,734.75 × 4,159,734.75
  4. Step 4: Simplify right side
    1,918,515.38x = 17,303,393,190,357.56
  5. Step 5: Solve for x
    x = 17,303,393,190,357.56/1,918,515.38
  6. Step 6: Final answer
    x = 9,019,157.95

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.