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Finding the Fourth Proportional to 18,796.55, 28,196.13 and 5,649.90

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Solution

The fourth proportional to 18,796.55, 28,196.13 and 5,649.90 is: 8,475.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,796.55 : 28,196.13 = 5,649.90 : x
  2. Step 2: Convert to fraction form
    18,796.55/28,196.13 = 5,649.90/x
  3. Step 3: Cross multiply
    18,796.55x = 28,196.13 × 5,649.90
  4. Step 4: Simplify right side
    18,796.55x = 159,305,314.89
  5. Step 5: Solve for x
    x = 159,305,314.89/18,796.55
  6. Step 6: Final answer
    x = 8,475.24

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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.