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Finding the Fourth Proportional to 4,881.11, 6,724.55 and 3,991.73

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Solution

The fourth proportional to 4,881.11, 6,724.55 and 3,991.73 is: 5,499.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,881.11 : 6,724.55 = 3,991.73 : x
  2. Step 2: Convert to fraction form
    4,881.11/6,724.55 = 3,991.73/x
  3. Step 3: Cross multiply
    4,881.11x = 6,724.55 × 3,991.73
  4. Step 4: Simplify right side
    4,881.11x = 26,842,534.39
  5. Step 5: Solve for x
    x = 26,842,534.39/4,881.11
  6. Step 6: Final answer
    x = 5,499.27

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Half scale
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Double scale
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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.