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Finding the Fourth Proportional to 14,922.12, 20,592.54 and 8,634.60

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Solution

The fourth proportional to 14,922.12, 20,592.54 and 8,634.60 is: 11,915.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,922.12 : 20,592.54 = 8,634.60 : x
  2. Step 2: Convert to fraction form
    14,922.12/20,592.54 = 8,634.60/x
  3. Step 3: Cross multiply
    14,922.12x = 20,592.54 × 8,634.60
  4. Step 4: Simplify right side
    14,922.12x = 177,808,345.88
  5. Step 5: Solve for x
    x = 177,808,345.88/14,922.12
  6. Step 6: Final answer
    x = 11,915.76

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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.