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Finding the Fourth Proportional to 10,918.04, 16,375.46 and 5,369.89

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Solution

The fourth proportional to 10,918.04, 16,375.46 and 5,369.89 is: 8,054.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,918.04 : 16,375.46 = 5,369.89 : x
  2. Step 2: Convert to fraction form
    10,918.04/16,375.46 = 5,369.89/x
  3. Step 3: Cross multiply
    10,918.04x = 16,375.46 × 5,369.89
  4. Step 4: Simplify right side
    10,918.04x = 87,934,351.11
  5. Step 5: Solve for x
    x = 87,934,351.11/10,918.04
  6. Step 6: Final answer
    x = 8,054.05

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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.