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Finding the Fourth Proportional to 60,911.81, 91,367.79 and 16,538.57

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Solution

The fourth proportional to 60,911.81, 91,367.79 and 16,538.57 is: 24,807.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,911.81 : 91,367.79 = 16,538.57 : x
  2. Step 2: Convert to fraction form
    60,911.81/91,367.79 = 16,538.57/x
  3. Step 3: Cross multiply
    60,911.81x = 91,367.79 × 16,538.57
  4. Step 4: Simplify right side
    60,911.81x = 1,511,092,414.43
  5. Step 5: Solve for x
    x = 1,511,092,414.43/60,911.81
  6. Step 6: Final answer
    x = 24,807.87

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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.