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Finding the Fourth Proportional to 122,274.48, 168,676.68 and 79,857.84

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Solution

The fourth proportional to 122,274.48, 168,676.68 and 79,857.84 is: 110,163.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,274.48 : 168,676.68 = 79,857.84 : x
  2. Step 2: Convert to fraction form
    122,274.48/168,676.68 = 79,857.84/x
  3. Step 3: Cross multiply
    122,274.48x = 168,676.68 × 79,857.84
  4. Step 4: Simplify right side
    122,274.48x = 13,470,155,323.17
  5. Step 5: Solve for x
    x = 13,470,155,323.17/122,274.48
  6. Step 6: Final answer
    x = 110,163.26

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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.