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Finding the Fourth Proportional to 41,978.27, 62,967.33 and 28,790.66

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Solution

The fourth proportional to 41,978.27, 62,967.33 and 28,790.66 is: 43,185.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,978.27 : 62,967.33 = 28,790.66 : x
  2. Step 2: Convert to fraction form
    41,978.27/62,967.33 = 28,790.66/x
  3. Step 3: Cross multiply
    41,978.27x = 62,967.33 × 28,790.66
  4. Step 4: Simplify right side
    41,978.27x = 1,812,870,989.14
  5. Step 5: Solve for x
    x = 1,812,870,989.14/41,978.27
  6. Step 6: Final answer
    x = 43,185.94

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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.