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Finding the Fourth Proportional to 14,524.80, 21,787.20 and 14,200.80

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Solution

The fourth proportional to 14,524.80, 21,787.20 and 14,200.80 is: 21,301.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,524.80 : 21,787.20 = 14,200.80 : x
  2. Step 2: Convert to fraction form
    14,524.80/21,787.20 = 14,200.80/x
  3. Step 3: Cross multiply
    14,524.80x = 21,787.20 × 14,200.80
  4. Step 4: Simplify right side
    14,524.80x = 309,395,669.76
  5. Step 5: Solve for x
    x = 309,395,669.76/14,524.80
  6. Step 6: Final answer
    x = 21,301.20

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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.