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Finding the Fourth Proportional to 11,129.92, 16,694.88 and 4,554.64

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Solution

The fourth proportional to 11,129.92, 16,694.88 and 4,554.64 is: 6,831.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,129.92 : 16,694.88 = 4,554.64 : x
  2. Step 2: Convert to fraction form
    11,129.92/16,694.88 = 4,554.64/x
  3. Step 3: Cross multiply
    11,129.92x = 16,694.88 × 4,554.64
  4. Step 4: Simplify right side
    11,129.92x = 76,039,168.24
  5. Step 5: Solve for x
    x = 76,039,168.24/11,129.92
  6. Step 6: Final answer
    x = 6,831.96

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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.