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Finding the Fourth Proportional to 20,633.56, 28,410.56 and 16,114.50

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Solution

The fourth proportional to 20,633.56, 28,410.56 and 16,114.50 is: 22,188.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,633.56 : 28,410.56 = 16,114.50 : x
  2. Step 2: Convert to fraction form
    20,633.56/28,410.56 = 16,114.50/x
  3. Step 3: Cross multiply
    20,633.56x = 28,410.56 × 16,114.50
  4. Step 4: Simplify right side
    20,633.56x = 457,821,761.01
  5. Step 5: Solve for x
    x = 457,821,761.01/20,633.56
  6. Step 6: Final answer
    x = 22,188.21

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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.