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Finding the Fourth Proportional to 14,824.80, 22,237.20 and 7,912.80

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Solution

The fourth proportional to 14,824.80, 22,237.20 and 7,912.80 is: 11,869.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,824.80 : 22,237.20 = 7,912.80 : x
  2. Step 2: Convert to fraction form
    14,824.80/22,237.20 = 7,912.80/x
  3. Step 3: Cross multiply
    14,824.80x = 22,237.20 × 7,912.80
  4. Step 4: Simplify right side
    14,824.80x = 175,958,516.16
  5. Step 5: Solve for x
    x = 175,958,516.16/14,824.80
  6. Step 6: Final answer
    x = 11,869.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.