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Finding the Fourth Proportional to 11,603.92, 16,011.72 and 6,634.96

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Solution

The fourth proportional to 11,603.92, 16,011.72 and 6,634.96 is: 9,155.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,603.92 : 16,011.72 = 6,634.96 : x
  2. Step 2: Convert to fraction form
    11,603.92/16,011.72 = 6,634.96/x
  3. Step 3: Cross multiply
    11,603.92x = 16,011.72 × 6,634.96
  4. Step 4: Simplify right side
    11,603.92x = 106,237,121.73
  5. Step 5: Solve for x
    x = 106,237,121.73/11,603.92
  6. Step 6: Final answer
    x = 9,155.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.