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Finding the Fourth Proportional to 163,871.91, 226,127.60 and 120,874.81

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Solution

The fourth proportional to 163,871.91, 226,127.60 and 120,874.81 is: 166,795.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,871.91 : 226,127.60 = 120,874.81 : x
  2. Step 2: Convert to fraction form
    163,871.91/226,127.60 = 120,874.81/x
  3. Step 3: Cross multiply
    163,871.91x = 226,127.60 × 120,874.81
  4. Step 4: Simplify right side
    163,871.91x = 27,333,129,757.35
  5. Step 5: Solve for x
    x = 27,333,129,757.35/163,871.91
  6. Step 6: Final answer
    x = 166,795.70

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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.