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Finding the Fourth Proportional to 223,789.05, 308,855.22 and 125,688.42

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Solution

The fourth proportional to 223,789.05, 308,855.22 and 125,688.42 is: 173,464.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,789.05 : 308,855.22 = 125,688.42 : x
  2. Step 2: Convert to fraction form
    223,789.05/308,855.22 = 125,688.42/x
  3. Step 3: Cross multiply
    223,789.05x = 308,855.22 × 125,688.42
  4. Step 4: Simplify right side
    223,789.05x = 38,819,524,610.55
  5. Step 5: Solve for x
    x = 38,819,524,610.55/223,789.05
  6. Step 6: Final answer
    x = 173,464.81

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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.