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Finding the Fourth Proportional to 9,992.73, 13,790.10 and 5,516.46

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Solution

The fourth proportional to 9,992.73, 13,790.10 and 5,516.46 is: 7,612.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,992.73 : 13,790.10 = 5,516.46 : x
  2. Step 2: Convert to fraction form
    9,992.73/13,790.10 = 5,516.46/x
  3. Step 3: Cross multiply
    9,992.73x = 13,790.10 × 5,516.46
  4. Step 4: Simplify right side
    9,992.73x = 76,072,535.05
  5. Step 5: Solve for x
    x = 76,072,535.05/9,992.73
  6. Step 6: Final answer
    x = 7,612.79

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Half scale
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Double scale
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Similar ratio
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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.