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Finding the Fourth Proportional to 14,872.14, 20,523.78 and 8,158.14

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Solution

The fourth proportional to 14,872.14, 20,523.78 and 8,158.14 is: 11,258.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,872.14 : 20,523.78 = 8,158.14 : x
  2. Step 2: Convert to fraction form
    14,872.14/20,523.78 = 8,158.14/x
  3. Step 3: Cross multiply
    14,872.14x = 20,523.78 × 8,158.14
  4. Step 4: Simplify right side
    14,872.14x = 167,435,870.57
  5. Step 5: Solve for x
    x = 167,435,870.57/14,872.14
  6. Step 6: Final answer
    x = 11,258.36

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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.