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Finding the Fourth Proportional to 17,838.21, 24,615.79 and 9,879.96

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Solution

The fourth proportional to 17,838.21, 24,615.79 and 9,879.96 is: 13,633.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,838.21 : 24,615.79 = 9,879.96 : x
  2. Step 2: Convert to fraction form
    17,838.21/24,615.79 = 9,879.96/x
  3. Step 3: Cross multiply
    17,838.21x = 24,615.79 × 9,879.96
  4. Step 4: Simplify right side
    17,838.21x = 243,203,020.57
  5. Step 5: Solve for x
    x = 243,203,020.57/17,838.21
  6. Step 6: Final answer
    x = 13,633.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.