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Finding the Fourth Proportional to 111,089.52, 166,682.80 and 71,723.52

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Solution

The fourth proportional to 111,089.52, 166,682.80 and 71,723.52 is: 107,616.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,089.52 : 166,682.80 = 71,723.52 : x
  2. Step 2: Convert to fraction form
    111,089.52/166,682.80 = 71,723.52/x
  3. Step 3: Cross multiply
    111,089.52x = 166,682.80 × 71,723.52
  4. Step 4: Simplify right side
    111,089.52x = 11,955,077,139.46
  5. Step 5: Solve for x
    x = 11,955,077,139.46/111,089.52
  6. Step 6: Final answer
    x = 107,616.61

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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.