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Finding the Fourth Proportional to 17,695.65, 24,431.39 and 10,990.98

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Solution

The fourth proportional to 17,695.65, 24,431.39 and 10,990.98 is: 15,174.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,695.65 : 24,431.39 = 10,990.98 : x
  2. Step 2: Convert to fraction form
    17,695.65/24,431.39 = 10,990.98/x
  3. Step 3: Cross multiply
    17,695.65x = 24,431.39 × 10,990.98
  4. Step 4: Simplify right side
    17,695.65x = 268,524,918.86
  5. Step 5: Solve for x
    x = 268,524,918.86/17,695.65
  6. Step 6: Final answer
    x = 15,174.63

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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.