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Finding the Fourth Proportional to 321,908.51, 482,857.86 and 108,826.11

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Solution

The fourth proportional to 321,908.51, 482,857.86 and 108,826.11 is: 163,237.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,908.51 : 482,857.86 = 108,826.11 : x
  2. Step 2: Convert to fraction form
    321,908.51/482,857.86 = 108,826.11/x
  3. Step 3: Cross multiply
    321,908.51x = 482,857.86 × 108,826.11
  4. Step 4: Simplify right side
    321,908.51x = 52,547,542,586.72
  5. Step 5: Solve for x
    x = 52,547,542,586.72/321,908.51
  6. Step 6: Final answer
    x = 163,237.51

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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.