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Finding the Fourth Proportional to 219,847.05, 329,720.73 and 111,666.75

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Solution

The fourth proportional to 219,847.05, 329,720.73 and 111,666.75 is: 167,474.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,847.05 : 329,720.73 = 111,666.75 : x
  2. Step 2: Convert to fraction form
    219,847.05/329,720.73 = 111,666.75/x
  3. Step 3: Cross multiply
    219,847.05x = 329,720.73 × 111,666.75
  4. Step 4: Simplify right side
    219,847.05x = 36,818,842,326.73
  5. Step 5: Solve for x
    x = 36,818,842,326.73/219,847.05
  6. Step 6: Final answer
    x = 167,474.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.