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Finding the Fourth Proportional to 17,871.72, 24,655.86 and 11,497.38

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Solution

The fourth proportional to 17,871.72, 24,655.86 and 11,497.38 is: 15,861.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,871.72 : 24,655.86 = 11,497.38 : x
  2. Step 2: Convert to fraction form
    17,871.72/24,655.86 = 11,497.38/x
  3. Step 3: Cross multiply
    17,871.72x = 24,655.86 × 11,497.38
  4. Step 4: Simplify right side
    17,871.72x = 283,477,791.65
  5. Step 5: Solve for x
    x = 283,477,791.65/17,871.72
  6. Step 6: Final answer
    x = 15,861.81

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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.