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Finding the Fourth Proportional to 321,908.02, 482,857.11 and 108,825.61

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Solution

The fourth proportional to 321,908.02, 482,857.11 and 108,825.61 is: 163,236.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,908.02 : 482,857.11 = 108,825.61 : x
  2. Step 2: Convert to fraction form
    321,908.02/482,857.11 = 108,825.61/x
  3. Step 3: Cross multiply
    321,908.02x = 482,857.11 × 108,825.61
  4. Step 4: Simplify right side
    321,908.02x = 52,547,216,580.17
  5. Step 5: Solve for x
    x = 52,547,216,580.17/321,908.02
  6. Step 6: Final answer
    x = 163,236.75

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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.