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Finding the Fourth Proportional to 14,612.76, 20,167.74 and 8,325

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Solution

The fourth proportional to 14,612.76, 20,167.74 and 8,325 is: 11,489.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,612.76 : 20,167.74 = 8,325 : x
  2. Step 2: Convert to fraction form
    14,612.76/20,167.74 = 8,325/x
  3. Step 3: Cross multiply
    14,612.76x = 20,167.74 × 8,325
  4. Step 4: Simplify right side
    14,612.76x = 167,896,435.50
  5. Step 5: Solve for x
    x = 167,896,435.50/14,612.76
  6. Step 6: Final answer
    x = 11,489.71

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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.