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Finding the Fourth Proportional to 20,592.56, 30,888.84 and 11,416.88

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Solution

The fourth proportional to 20,592.56, 30,888.84 and 11,416.88 is: 17,125.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,592.56 : 30,888.84 = 11,416.88 : x
  2. Step 2: Convert to fraction form
    20,592.56/30,888.84 = 11,416.88/x
  3. Step 3: Cross multiply
    20,592.56x = 30,888.84 × 11,416.88
  4. Step 4: Simplify right side
    20,592.56x = 352,654,179.62
  5. Step 5: Solve for x
    x = 352,654,179.62/20,592.56
  6. Step 6: Final answer
    x = 17,125.32

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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.