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Finding the Fourth Proportional to 117,620.43, 162,280.43 and 66,625.06

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Solution

The fourth proportional to 117,620.43, 162,280.43 and 66,625.06 is: 91,922.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,620.43 : 162,280.43 = 66,625.06 : x
  2. Step 2: Convert to fraction form
    117,620.43/162,280.43 = 66,625.06/x
  3. Step 3: Cross multiply
    117,620.43x = 162,280.43 × 66,625.06
  4. Step 4: Simplify right side
    117,620.43x = 10,811,943,385.58
  5. Step 5: Solve for x
    x = 10,811,943,385.58/117,620.43
  6. Step 6: Final answer
    x = 91,922.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.