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Finding the Fourth Proportional to 99,311.46, 137,052.46 and 53,992.47

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Solution

The fourth proportional to 99,311.46, 137,052.46 and 53,992.47 is: 74,511.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,311.46 : 137,052.46 = 53,992.47 : x
  2. Step 2: Convert to fraction form
    99,311.46/137,052.46 = 53,992.47/x
  3. Step 3: Cross multiply
    99,311.46x = 137,052.46 × 53,992.47
  4. Step 4: Simplify right side
    99,311.46x = 7,399,800,834.98
  5. Step 5: Solve for x
    x = 7,399,800,834.98/99,311.46
  6. Step 6: Final answer
    x = 74,511.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.