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Finding the Fourth Proportional to 20,009.62, 27,615.09 and 11,624.50

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Solution

The fourth proportional to 20,009.62, 27,615.09 and 11,624.50 is: 16,042.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,009.62 : 27,615.09 = 11,624.50 : x
  2. Step 2: Convert to fraction form
    20,009.62/27,615.09 = 11,624.50/x
  3. Step 3: Cross multiply
    20,009.62x = 27,615.09 × 11,624.50
  4. Step 4: Simplify right side
    20,009.62x = 321,011,613.71
  5. Step 5: Solve for x
    x = 321,011,613.71/20,009.62
  6. Step 6: Final answer
    x = 16,042.86

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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.