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Finding the Fourth Proportional to 322,316.44, 483,436.14 and 85,677.28

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Solution

The fourth proportional to 322,316.44, 483,436.14 and 85,677.28 is: 128,505.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,316.44 : 483,436.14 = 85,677.28 : x
  2. Step 2: Convert to fraction form
    322,316.44/483,436.14 = 85,677.28/x
  3. Step 3: Cross multiply
    322,316.44x = 483,436.14 × 85,677.28
  4. Step 4: Simplify right side
    322,316.44x = 41,419,493,528.90
  5. Step 5: Solve for x
    x = 41,419,493,528.90/322,316.44
  6. Step 6: Final answer
    x = 128,505.68

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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.