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Finding the Fourth Proportional to 140,991.60, 194,501.34 and 84,392.04

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Solution

The fourth proportional to 140,991.60, 194,501.34 and 84,392.04 is: 116,420.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,991.60 : 194,501.34 = 84,392.04 : x
  2. Step 2: Convert to fraction form
    140,991.60/194,501.34 = 84,392.04/x
  3. Step 3: Cross multiply
    140,991.60x = 194,501.34 × 84,392.04
  4. Step 4: Simplify right side
    140,991.60x = 16,414,364,865.33
  5. Step 5: Solve for x
    x = 16,414,364,865.33/140,991.60
  6. Step 6: Final answer
    x = 116,420.87

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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.