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Finding the Fourth Proportional to 14,915.84, 20,584.68 and 8,951.76

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Solution

The fourth proportional to 14,915.84, 20,584.68 and 8,951.76 is: 12,353.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,915.84 : 20,584.68 = 8,951.76 : x
  2. Step 2: Convert to fraction form
    14,915.84/20,584.68 = 8,951.76/x
  3. Step 3: Cross multiply
    14,915.84x = 20,584.68 × 8,951.76
  4. Step 4: Simplify right side
    14,915.84x = 184,269,115.04
  5. Step 5: Solve for x
    x = 184,269,115.04/14,915.84
  6. Step 6: Final answer
    x = 12,353.92

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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.