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Finding the Fourth Proportional to 17,221.63, 25,836.77 and 4,909.63

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Solution

The fourth proportional to 17,221.63, 25,836.77 and 4,909.63 is: 7,365.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,221.63 : 25,836.77 = 4,909.63 : x
  2. Step 2: Convert to fraction form
    17,221.63/25,836.77 = 4,909.63/x
  3. Step 3: Cross multiply
    17,221.63x = 25,836.77 × 4,909.63
  4. Step 4: Simplify right side
    17,221.63x = 126,848,981.10
  5. Step 5: Solve for x
    x = 126,848,981.10/17,221.63
  6. Step 6: Final answer
    x = 7,365.68

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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.