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Finding the Fourth Proportional to 79,323.85, 118,989.72 and 26,021.20

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Solution

The fourth proportional to 79,323.85, 118,989.72 and 26,021.20 is: 39,033.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,323.85 : 118,989.72 = 26,021.20 : x
  2. Step 2: Convert to fraction form
    79,323.85/118,989.72 = 26,021.20/x
  3. Step 3: Cross multiply
    79,323.85x = 118,989.72 × 26,021.20
  4. Step 4: Simplify right side
    79,323.85x = 3,096,255,302.06
  5. Step 5: Solve for x
    x = 3,096,255,302.06/79,323.85
  6. Step 6: Final answer
    x = 39,033.09

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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.