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Finding the Fourth Proportional to 53,252.89, 79,891.86 and 15,813.28

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Solution

The fourth proportional to 53,252.89, 79,891.86 and 15,813.28 is: 23,723.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,252.89 : 79,891.86 = 15,813.28 : x
  2. Step 2: Convert to fraction form
    53,252.89/79,891.86 = 15,813.28/x
  3. Step 3: Cross multiply
    53,252.89x = 79,891.86 × 15,813.28
  4. Step 4: Simplify right side
    53,252.89x = 1,263,352,351.90
  5. Step 5: Solve for x
    x = 1,263,352,351.90/53,252.89
  6. Step 6: Final answer
    x = 23,723.64

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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.