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Finding the Fourth Proportional to 14,922.20, 20,949.40 and 14,922.20

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Solution

The fourth proportional to 14,922.20, 20,949.40 and 14,922.20 is: 20,949.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,922.20 : 20,949.40 = 14,922.20 : x
  2. Step 2: Convert to fraction form
    14,922.20/20,949.40 = 14,922.20/x
  3. Step 3: Cross multiply
    14,922.20x = 20,949.40 × 14,922.20
  4. Step 4: Simplify right side
    14,922.20x = 312,611,136.68
  5. Step 5: Solve for x
    x = 312,611,136.68/14,922.20
  6. Step 6: Final answer
    x = 20,949.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.