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Finding the Fourth Proportional to 11,798.55, 17,672.30 and 5,549.20

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Solution

The fourth proportional to 11,798.55, 17,672.30 and 5,549.20 is: 8,311.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,798.55 : 17,672.30 = 5,549.20 : x
  2. Step 2: Convert to fraction form
    11,798.55/17,672.30 = 5,549.20/x
  3. Step 3: Cross multiply
    11,798.55x = 17,672.30 × 5,549.20
  4. Step 4: Simplify right side
    11,798.55x = 98,067,099.41
  5. Step 5: Solve for x
    x = 98,067,099.41/11,798.55
  6. Step 6: Final answer
    x = 8,311.80

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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.