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Finding the Fourth Proportional to 67,223.80, 100,689.90 and 36,022.60

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Solution

The fourth proportional to 67,223.80, 100,689.90 and 36,022.60 is: 53,955.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,223.80 : 100,689.90 = 36,022.60 : x
  2. Step 2: Convert to fraction form
    67,223.80/100,689.90 = 36,022.60/x
  3. Step 3: Cross multiply
    67,223.80x = 100,689.90 × 36,022.60
  4. Step 4: Simplify right side
    67,223.80x = 3,627,111,991.74
  5. Step 5: Solve for x
    x = 3,627,111,991.74/67,223.80
  6. Step 6: Final answer
    x = 53,955.77

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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.