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Finding the Fourth Proportional to 120,573.64, 179,723.12 and 111,602.08

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Solution

The fourth proportional to 120,573.64, 179,723.12 and 111,602.08 is: 166,350.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,573.64 : 179,723.12 = 111,602.08 : x
  2. Step 2: Convert to fraction form
    120,573.64/179,723.12 = 111,602.08/x
  3. Step 3: Cross multiply
    120,573.64x = 179,723.12 × 111,602.08
  4. Step 4: Simplify right side
    120,573.64x = 20,057,474,016.09
  5. Step 5: Solve for x
    x = 20,057,474,016.09/120,573.64
  6. Step 6: Final answer
    x = 166,350.41

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.