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Finding the Fourth Proportional to 171,607.85, 236,678.42 and 120,788.81

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Solution

The fourth proportional to 171,607.85, 236,678.42 and 120,788.81 is: 166,589.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,607.85 : 236,678.42 = 120,788.81 : x
  2. Step 2: Convert to fraction form
    171,607.85/236,678.42 = 120,788.81/x
  3. Step 3: Cross multiply
    171,607.85x = 236,678.42 × 120,788.81
  4. Step 4: Simplify right side
    171,607.85x = 28,588,104,704.48
  5. Step 5: Solve for x
    x = 28,588,104,704.48/171,607.85
  6. Step 6: Final answer
    x = 166,589.73

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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.