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Finding the Fourth Proportional to 321,648.56, 482,474.10 and 134,528.84

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Solution

The fourth proportional to 321,648.56, 482,474.10 and 134,528.84 is: 201,793.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,648.56 : 482,474.10 = 134,528.84 : x
  2. Step 2: Convert to fraction form
    321,648.56/482,474.10 = 134,528.84/x
  3. Step 3: Cross multiply
    321,648.56x = 482,474.10 × 134,528.84
  4. Step 4: Simplify right side
    321,648.56x = 64,906,681,003.04
  5. Step 5: Solve for x
    x = 64,906,681,003.04/321,648.56
  6. Step 6: Final answer
    x = 201,793.79

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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.