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Finding the Fourth Proportional to 14,933.18, 20,608.08 and 8,649.20

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Solution

The fourth proportional to 14,933.18, 20,608.08 and 8,649.20 is: 11,936.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,933.18 : 20,608.08 = 8,649.20 : x
  2. Step 2: Convert to fraction form
    14,933.18/20,608.08 = 8,649.20/x
  3. Step 3: Cross multiply
    14,933.18x = 20,608.08 × 8,649.20
  4. Step 4: Simplify right side
    14,933.18x = 178,243,405.54
  5. Step 5: Solve for x
    x = 178,243,405.54/14,933.18
  6. Step 6: Final answer
    x = 11,936.06

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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.