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Finding the Fourth Proportional to 69,940.83, 96,489.45 and 48,732.40

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Solution

The fourth proportional to 69,940.83, 96,489.45 and 48,732.40 is: 67,230.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,940.83 : 96,489.45 = 48,732.40 : x
  2. Step 2: Convert to fraction form
    69,940.83/96,489.45 = 48,732.40/x
  3. Step 3: Cross multiply
    69,940.83x = 96,489.45 × 48,732.40
  4. Step 4: Simplify right side
    69,940.83x = 4,702,161,990.73
  5. Step 5: Solve for x
    x = 4,702,161,990.73/69,940.83
  6. Step 6: Final answer
    x = 67,230.57

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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.