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Finding the Fourth Proportional to 7,167.72, 9,891.46 and 4,023.91

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Solution

The fourth proportional to 7,167.72, 9,891.46 and 4,023.91 is: 5,553.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,167.72 : 9,891.46 = 4,023.91 : x
  2. Step 2: Convert to fraction form
    7,167.72/9,891.46 = 4,023.91/x
  3. Step 3: Cross multiply
    7,167.72x = 9,891.46 × 4,023.91
  4. Step 4: Simplify right side
    7,167.72x = 39,802,344.81
  5. Step 5: Solve for x
    x = 39,802,344.81/7,167.72
  6. Step 6: Final answer
    x = 5,553.00

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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.