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Finding the Fourth Proportional to 19,263.54, 28,899.72 and 8,170.64

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Solution

The fourth proportional to 19,263.54, 28,899.72 and 8,170.64 is: 12,257.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,263.54 : 28,899.72 = 8,170.64 : x
  2. Step 2: Convert to fraction form
    19,263.54/28,899.72 = 8,170.64/x
  3. Step 3: Cross multiply
    19,263.54x = 28,899.72 × 8,170.64
  4. Step 4: Simplify right side
    19,263.54x = 236,129,208.22
  5. Step 5: Solve for x
    x = 236,129,208.22/19,263.54
  6. Step 6: Final answer
    x = 12,257.83

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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.