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Finding the Fourth Proportional to 1,299,398.77, 1,947,789.72 and 541,659.79

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Solution

The fourth proportional to 1,299,398.77, 1,947,789.72 and 541,659.79 is: 811,944.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,299,398.77 : 1,947,789.72 = 541,659.79 : x
  2. Step 2: Convert to fraction form
    1,299,398.77/1,947,789.72 = 541,659.79/x
  3. Step 3: Cross multiply
    1,299,398.77x = 1,947,789.72 × 541,659.79
  4. Step 4: Simplify right side
    1,299,398.77x = 1,055,039,370,699.36
  5. Step 5: Solve for x
    x = 1,055,039,370,699.36/1,299,398.77
  6. Step 6: Final answer
    x = 811,944.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.