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Finding the Fourth Proportional to 8,555.64, 12,832.20 and 3,008.58

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Solution

The fourth proportional to 8,555.64, 12,832.20 and 3,008.58 is: 4,512.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,555.64 : 12,832.20 = 3,008.58 : x
  2. Step 2: Convert to fraction form
    8,555.64/12,832.20 = 3,008.58/x
  3. Step 3: Cross multiply
    8,555.64x = 12,832.20 × 3,008.58
  4. Step 4: Simplify right side
    8,555.64x = 38,606,700.28
  5. Step 5: Solve for x
    x = 38,606,700.28/8,555.64
  6. Step 6: Final answer
    x = 4,512.43

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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.