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Finding the Fourth Proportional to 326,679.71, 450,923.69 and 211,755.61

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Solution

The fourth proportional to 326,679.71, 450,923.69 and 211,755.61 is: 292,291.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,679.71 : 450,923.69 = 211,755.61 : x
  2. Step 2: Convert to fraction form
    326,679.71/450,923.69 = 211,755.61/x
  3. Step 3: Cross multiply
    326,679.71x = 450,923.69 × 211,755.61
  4. Step 4: Simplify right side
    326,679.71x = 95,485,617,726.00
  5. Step 5: Solve for x
    x = 95,485,617,726.00/326,679.71
  6. Step 6: Final answer
    x = 292,291.24

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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.