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Finding the Fourth Proportional to 10,918.70, 16,378.04 and 4,344.94

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Solution

The fourth proportional to 10,918.70, 16,378.04 and 4,344.94 is: 6,517.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,918.70 : 16,378.04 = 4,344.94 : x
  2. Step 2: Convert to fraction form
    10,918.70/16,378.04 = 4,344.94/x
  3. Step 3: Cross multiply
    10,918.70x = 16,378.04 × 4,344.94
  4. Step 4: Simplify right side
    10,918.70x = 71,161,519.23
  5. Step 5: Solve for x
    x = 71,161,519.23/10,918.70
  6. Step 6: Final answer
    x = 6,517.40

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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.