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Finding the Fourth Proportional to 111,148.50, 166,723.02 and 28,042.50

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Solution

The fourth proportional to 111,148.50, 166,723.02 and 28,042.50 is: 42,063.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,148.50 : 166,723.02 = 28,042.50 : x
  2. Step 2: Convert to fraction form
    111,148.50/166,723.02 = 28,042.50/x
  3. Step 3: Cross multiply
    111,148.50x = 166,723.02 × 28,042.50
  4. Step 4: Simplify right side
    111,148.50x = 4,675,330,288.35
  5. Step 5: Solve for x
    x = 4,675,330,288.35/111,148.50
  6. Step 6: Final answer
    x = 42,063.82

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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.