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Finding the Fourth Proportional to 79,796.36, 119,684.81 and 20,627.08

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Solution

The fourth proportional to 79,796.36, 119,684.81 and 20,627.08 is: 30,938.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,796.36 : 119,684.81 = 20,627.08 : x
  2. Step 2: Convert to fraction form
    79,796.36/119,684.81 = 20,627.08/x
  3. Step 3: Cross multiply
    79,796.36x = 119,684.81 × 20,627.08
  4. Step 4: Simplify right side
    79,796.36x = 2,468,747,903.01
  5. Step 5: Solve for x
    x = 2,468,747,903.01/79,796.36
  6. Step 6: Final answer
    x = 30,938.10

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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.