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Finding the Fourth Proportional to 321,907.51, 482,856.36 and 108,825.11

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Solution

The fourth proportional to 321,907.51, 482,856.36 and 108,825.11 is: 163,236.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,907.51 : 482,856.36 = 108,825.11 : x
  2. Step 2: Convert to fraction form
    321,907.51/482,856.36 = 108,825.11/x
  3. Step 3: Cross multiply
    321,907.51x = 482,856.36 × 108,825.11
  4. Step 4: Simplify right side
    321,907.51x = 52,546,894,121.50
  5. Step 5: Solve for x
    x = 52,546,894,121.50/321,907.51
  6. Step 6: Final answer
    x = 163,236.00

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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.