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Finding the Fourth Proportional to 10,672.21, 16,004.21 and 7,375.31

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Solution

The fourth proportional to 10,672.21, 16,004.21 and 7,375.31 is: 11,060.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,672.21 : 16,004.21 = 7,375.31 : x
  2. Step 2: Convert to fraction form
    10,672.21/16,004.21 = 7,375.31/x
  3. Step 3: Cross multiply
    10,672.21x = 16,004.21 × 7,375.31
  4. Step 4: Simplify right side
    10,672.21x = 118,036,010.06
  5. Step 5: Solve for x
    x = 118,036,010.06/10,672.21
  6. Step 6: Final answer
    x = 11,060.13

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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.