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Finding the Fourth Proportional to 122,510.94, 169,073.49 and 68,069.67

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Solution

The fourth proportional to 122,510.94, 169,073.49 and 68,069.67 is: 93,940.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,510.94 : 169,073.49 = 68,069.67 : x
  2. Step 2: Convert to fraction form
    122,510.94/169,073.49 = 68,069.67/x
  3. Step 3: Cross multiply
    122,510.94x = 169,073.49 × 68,069.67
  4. Step 4: Simplify right side
    122,510.94x = 11,508,776,670.05
  5. Step 5: Solve for x
    x = 11,508,776,670.05/122,510.94
  6. Step 6: Final answer
    x = 93,940.81

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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.