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Finding the Fourth Proportional to 18,632.61, 25,713.90 and 10,674.85

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Solution

The fourth proportional to 18,632.61, 25,713.90 and 10,674.85 is: 14,731.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,632.61 : 25,713.90 = 10,674.85 : x
  2. Step 2: Convert to fraction form
    18,632.61/25,713.90 = 10,674.85/x
  3. Step 3: Cross multiply
    18,632.61x = 25,713.90 × 10,674.85
  4. Step 4: Simplify right side
    18,632.61x = 274,491,843.47
  5. Step 5: Solve for x
    x = 274,491,843.47/18,632.61
  6. Step 6: Final answer
    x = 14,731.80

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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.