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Finding the Fourth Proportional to 11,211.43, 16,835.88 and 7,004.47

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Solution

The fourth proportional to 11,211.43, 16,835.88 and 7,004.47 is: 10,518.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,211.43 : 16,835.88 = 7,004.47 : x
  2. Step 2: Convert to fraction form
    11,211.43/16,835.88 = 7,004.47/x
  3. Step 3: Cross multiply
    11,211.43x = 16,835.88 × 7,004.47
  4. Step 4: Simplify right side
    11,211.43x = 117,926,416.38
  5. Step 5: Solve for x
    x = 117,926,416.38/11,211.43
  6. Step 6: Final answer
    x = 10,518.41

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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.