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Finding the Third Proportional to 1,538,406.75 and 2,388,245.63

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Solution

The third proportional to 1,538,406.75 and 2,388,245.63 is: 3,707,548.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,538,406.75 : 2,388,245.63 = 2,388,245.63 : x
  2. Step 2: Convert to fraction form
    1,538,406.75/2,388,245.63 = 2,388,245.63/x
  3. Step 3: Cross multiply
    1,538,406.75x = 2,388,245.63 × 2,388,245.63
  4. Step 4: Simplify right side
    1,538,406.75x = 5,703,717,165,331.64
  5. Step 5: Solve for x
    x = 5,703,717,165,331.64/1,538,406.75
  6. Step 6: Final answer
    x = 3,707,548.19

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.