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Finding the Fourth Proportional to 119,138.49, 164,272.21 and 88,871.27

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Solution

The fourth proportional to 119,138.49, 164,272.21 and 88,871.27 is: 122,538.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,138.49 : 164,272.21 = 88,871.27 : x
  2. Step 2: Convert to fraction form
    119,138.49/164,272.21 = 88,871.27/x
  3. Step 3: Cross multiply
    119,138.49x = 164,272.21 × 88,871.27
  4. Step 4: Simplify right side
    119,138.49x = 14,599,079,596.83
  5. Step 5: Solve for x
    x = 14,599,079,596.83/119,138.49
  6. Step 6: Final answer
    x = 122,538.74

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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.