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Finding the Fourth Proportional to 11,139.92, 16,709.92 and 4,564.64

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Solution

The fourth proportional to 11,139.92, 16,709.92 and 4,564.64 is: 6,846.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,139.92 : 16,709.92 = 4,564.64 : x
  2. Step 2: Convert to fraction form
    11,139.92/16,709.92 = 4,564.64/x
  3. Step 3: Cross multiply
    11,139.92x = 16,709.92 × 4,564.64
  4. Step 4: Simplify right side
    11,139.92x = 76,274,769.23
  5. Step 5: Solve for x
    x = 76,274,769.23/11,139.92
  6. Step 6: Final answer
    x = 6,846.98

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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.