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Finding the Fourth Proportional to 120,903.94, 166,844.06 and 67,186.36

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Solution

The fourth proportional to 120,903.94, 166,844.06 and 67,186.36 is: 92,715.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,903.94 : 166,844.06 = 67,186.36 : x
  2. Step 2: Convert to fraction form
    120,903.94/166,844.06 = 67,186.36/x
  3. Step 3: Cross multiply
    120,903.94x = 166,844.06 × 67,186.36
  4. Step 4: Simplify right side
    120,903.94x = 11,209,645,079.02
  5. Step 5: Solve for x
    x = 11,209,645,079.02/120,903.94
  6. Step 6: Final answer
    x = 92,715.30

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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.