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Finding the Fourth Proportional to 43,179.94, 64,772.22 and 13,600.08

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Solution

The fourth proportional to 43,179.94, 64,772.22 and 13,600.08 is: 20,400.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,179.94 : 64,772.22 = 13,600.08 : x
  2. Step 2: Convert to fraction form
    43,179.94/64,772.22 = 13,600.08/x
  3. Step 3: Cross multiply
    43,179.94x = 64,772.22 × 13,600.08
  4. Step 4: Simplify right side
    43,179.94x = 880,907,373.78
  5. Step 5: Solve for x
    x = 880,907,373.78/43,179.94
  6. Step 6: Final answer
    x = 20,400.85

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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.