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Finding the Fourth Proportional to 20,697.41, 31,052.28 and 9,613.41

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Solution

The fourth proportional to 20,697.41, 31,052.28 and 9,613.41 is: 14,422.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,697.41 : 31,052.28 = 9,613.41 : x
  2. Step 2: Convert to fraction form
    20,697.41/31,052.28 = 9,613.41/x
  3. Step 3: Cross multiply
    20,697.41x = 31,052.28 × 9,613.41
  4. Step 4: Simplify right side
    20,697.41x = 298,518,299.07
  5. Step 5: Solve for x
    x = 298,518,299.07/20,697.41
  6. Step 6: Final answer
    x = 14,422.98

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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.