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Finding the Fourth Proportional to 7,949.92, 11,866.76 and 7,371.68

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Solution

The fourth proportional to 7,949.92, 11,866.76 and 7,371.68 is: 11,003.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,949.92 : 11,866.76 = 7,371.68 : x
  2. Step 2: Convert to fraction form
    7,949.92/11,866.76 = 7,371.68/x
  3. Step 3: Cross multiply
    7,949.92x = 11,866.76 × 7,371.68
  4. Step 4: Simplify right side
    7,949.92x = 87,477,957.36
  5. Step 5: Solve for x
    x = 87,477,957.36/7,949.92
  6. Step 6: Final answer
    x = 11,003.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.