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Finding the Fourth Proportional to 326,562.26, 490,029.92 and 126,856.64

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Solution

The fourth proportional to 326,562.26, 490,029.92 and 126,856.64 is: 190,357.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,562.26 : 490,029.92 = 126,856.64 : x
  2. Step 2: Convert to fraction form
    326,562.26/490,029.92 = 126,856.64/x
  3. Step 3: Cross multiply
    326,562.26x = 490,029.92 × 126,856.64
  4. Step 4: Simplify right side
    326,562.26x = 62,163,546,066.24
  5. Step 5: Solve for x
    x = 62,163,546,066.24/326,562.26
  6. Step 6: Final answer
    x = 190,357.41

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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.