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Finding the Fourth Proportional to 1,951,749.75, 2,695,076.79 and 1,227,809.01

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Solution

The fourth proportional to 1,951,749.75, 2,695,076.79 and 1,227,809.01 is: 1,695,422.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,951,749.75 : 2,695,076.79 = 1,227,809.01 : x
  2. Step 2: Convert to fraction form
    1,951,749.75/2,695,076.79 = 1,227,809.01/x
  3. Step 3: Cross multiply
    1,951,749.75x = 2,695,076.79 × 1,227,809.01
  4. Step 4: Simplify right side
    1,951,749.75x = 3,309,039,565,403.88
  5. Step 5: Solve for x
    x = 3,309,039,565,403.88/1,951,749.75
  6. Step 6: Final answer
    x = 1,695,422.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.