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Finding the Fourth Proportional to 11,499.20, 17,251.20 and 6,564.80

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Solution

The fourth proportional to 11,499.20, 17,251.20 and 6,564.80 is: 9,848.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,499.20 : 17,251.20 = 6,564.80 : x
  2. Step 2: Convert to fraction form
    11,499.20/17,251.20 = 6,564.80/x
  3. Step 3: Cross multiply
    11,499.20x = 17,251.20 × 6,564.80
  4. Step 4: Simplify right side
    11,499.20x = 113,250,677.76
  5. Step 5: Solve for x
    x = 113,250,677.76/11,499.20
  6. Step 6: Final answer
    x = 9,848.57

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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.