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Finding the Fourth Proportional to 10,891.54, 16,335.77 and 3,496.64

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Solution

The fourth proportional to 10,891.54, 16,335.77 and 3,496.64 is: 5,244.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,891.54 : 16,335.77 = 3,496.64 : x
  2. Step 2: Convert to fraction form
    10,891.54/16,335.77 = 3,496.64/x
  3. Step 3: Cross multiply
    10,891.54x = 16,335.77 × 3,496.64
  4. Step 4: Simplify right side
    10,891.54x = 57,120,306.81
  5. Step 5: Solve for x
    x = 57,120,306.81/10,891.54
  6. Step 6: Final answer
    x = 5,244.47

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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.