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Finding the Fourth Proportional to 192,873.15, 266,157.29 and 107,988.39

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Solution

The fourth proportional to 192,873.15, 266,157.29 and 107,988.39 is: 149,019.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,873.15 : 266,157.29 = 107,988.39 : x
  2. Step 2: Convert to fraction form
    192,873.15/266,157.29 = 107,988.39/x
  3. Step 3: Cross multiply
    192,873.15x = 266,157.29 × 107,988.39
  4. Step 4: Simplify right side
    192,873.15x = 28,741,897,503.83
  5. Step 5: Solve for x
    x = 28,741,897,503.83/192,873.15
  6. Step 6: Final answer
    x = 149,019.69

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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.