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Finding the Fourth Proportional to 10,891.70, 16,339.67 and 3,495.59

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Solution

The fourth proportional to 10,891.70, 16,339.67 and 3,495.59 is: 5,244.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,891.70 : 16,339.67 = 3,495.59 : x
  2. Step 2: Convert to fraction form
    10,891.70/16,339.67 = 3,495.59/x
  3. Step 3: Cross multiply
    10,891.70x = 16,339.67 × 3,495.59
  4. Step 4: Simplify right side
    10,891.70x = 57,116,687.88
  5. Step 5: Solve for x
    x = 57,116,687.88/10,891.70
  6. Step 6: Final answer
    x = 5,244.06

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1.5x scale

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.