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Finding the Third Proportional to 668,619.56 and 1,392,643.13

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Solution

The third proportional to 668,619.56 and 1,392,643.13 is: 2,900,685.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,619.56 : 1,392,643.13 = 1,392,643.13 : x
  2. Step 2: Convert to fraction form
    668,619.56/1,392,643.13 = 1,392,643.13/x
  3. Step 3: Cross multiply
    668,619.56x = 1,392,643.13 × 1,392,643.13
  4. Step 4: Simplify right side
    668,619.56x = 1,939,454,873,609.77
  5. Step 5: Solve for x
    x = 1,939,454,873,609.77/668,619.56
  6. Step 6: Final answer
    x = 2,900,685.21

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.