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Finding the Fourth Proportional to 79,480.94, 119,239.87 and 23,318.78

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Solution

The fourth proportional to 79,480.94, 119,239.87 and 23,318.78 is: 34,983.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,480.94 : 119,239.87 = 23,318.78 : x
  2. Step 2: Convert to fraction form
    79,480.94/119,239.87 = 23,318.78/x
  3. Step 3: Cross multiply
    79,480.94x = 119,239.87 × 23,318.78
  4. Step 4: Simplify right side
    79,480.94x = 2,780,527,641.26
  5. Step 5: Solve for x
    x = 2,780,527,641.26/79,480.94
  6. Step 6: Final answer
    x = 34,983.58

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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.