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Finding the Fourth Proportional to 117,825.80, 176,738.70 and 68,059.40

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Solution

The fourth proportional to 117,825.80, 176,738.70 and 68,059.40 is: 102,089.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,825.80 : 176,738.70 = 68,059.40 : x
  2. Step 2: Convert to fraction form
    117,825.80/176,738.70 = 68,059.40/x
  3. Step 3: Cross multiply
    117,825.80x = 176,738.70 × 68,059.40
  4. Step 4: Simplify right side
    117,825.80x = 12,028,729,878.78
  5. Step 5: Solve for x
    x = 12,028,729,878.78/117,825.80
  6. Step 6: Final answer
    x = 102,089.10

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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.