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Finding the Fourth Proportional to 9,940.79, 13,718.67 and 5,464.91

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Solution

The fourth proportional to 9,940.79, 13,718.67 and 5,464.91 is: 7,541.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,940.79 : 13,718.67 = 5,464.91 : x
  2. Step 2: Convert to fraction form
    9,940.79/13,718.67 = 5,464.91/x
  3. Step 3: Cross multiply
    9,940.79x = 13,718.67 × 5,464.91
  4. Step 4: Simplify right side
    9,940.79x = 74,971,296.87
  5. Step 5: Solve for x
    x = 74,971,296.87/9,940.79
  6. Step 6: Final answer
    x = 7,541.78

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