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Finding the Fourth Proportional to 192,897.36, 289,251.36 and 80,543.88

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Solution

The fourth proportional to 192,897.36, 289,251.36 and 80,543.88 is: 120,776.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,897.36 : 289,251.36 = 80,543.88 : x
  2. Step 2: Convert to fraction form
    192,897.36/289,251.36 = 80,543.88/x
  3. Step 3: Cross multiply
    192,897.36x = 289,251.36 × 80,543.88
  4. Step 4: Simplify right side
    192,897.36x = 23,297,426,829.68
  5. Step 5: Solve for x
    x = 23,297,426,829.68/192,897.36
  6. Step 6: Final answer
    x = 120,776.29

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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.