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Finding the Fourth Proportional to 120,903.56, 166,671.06 and 84,491.96

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Solution

The fourth proportional to 120,903.56, 166,671.06 and 84,491.96 is: 116,476.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,903.56 : 166,671.06 = 84,491.96 : x
  2. Step 2: Convert to fraction form
    120,903.56/166,671.06 = 84,491.96/x
  3. Step 3: Cross multiply
    120,903.56x = 166,671.06 × 84,491.96
  4. Step 4: Simplify right side
    120,903.56x = 14,082,364,534.68
  5. Step 5: Solve for x
    x = 14,082,364,534.68/120,903.56
  6. Step 6: Final answer
    x = 116,476.01

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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.