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Finding the Fourth Proportional to 120,622.04, 166,458.84 and 66,912.02

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Solution

The fourth proportional to 120,622.04, 166,458.84 and 66,912.02 is: 92,338.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,622.04 : 166,458.84 = 66,912.02 : x
  2. Step 2: Convert to fraction form
    120,622.04/166,458.84 = 66,912.02/x
  3. Step 3: Cross multiply
    120,622.04x = 166,458.84 × 66,912.02
  4. Step 4: Simplify right side
    120,622.04x = 11,138,097,231.26
  5. Step 5: Solve for x
    x = 11,138,097,231.26/120,622.04
  6. Step 6: Final answer
    x = 92,338.82

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1.5x scale

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.