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Finding the Fourth Proportional to 4,928.81, 6,800.13 and 3,251.05

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Solution

The fourth proportional to 4,928.81, 6,800.13 and 3,251.05 is: 4,485.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,928.81 : 6,800.13 = 3,251.05 : x
  2. Step 2: Convert to fraction form
    4,928.81/6,800.13 = 3,251.05/x
  3. Step 3: Cross multiply
    4,928.81x = 6,800.13 × 3,251.05
  4. Step 4: Simplify right side
    4,928.81x = 22,107,550.45
  5. Step 5: Solve for x
    x = 22,107,550.45/4,928.81
  6. Step 6: Final answer
    x = 4,485.38

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Double scale
Find fourth proportional to 4,929.81, 6,801.51 and 3,252.05
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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.