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Finding the Fourth Proportional to 20,652.24, 28,500.02 and 11,698.86

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Solution

The fourth proportional to 20,652.24, 28,500.02 and 11,698.86 is: 16,144.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,652.24 : 28,500.02 = 11,698.86 : x
  2. Step 2: Convert to fraction form
    20,652.24/28,500.02 = 11,698.86/x
  3. Step 3: Cross multiply
    20,652.24x = 28,500.02 × 11,698.86
  4. Step 4: Simplify right side
    20,652.24x = 333,417,743.98
  5. Step 5: Solve for x
    x = 333,417,743.98/20,652.24
  6. Step 6: Final answer
    x = 16,144.39

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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.