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Finding the Fourth Proportional to 4,890.62, 6,749.14 and 2,794.76

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Solution

The fourth proportional to 4,890.62, 6,749.14 and 2,794.76 is: 3,856.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,890.62 : 6,749.14 = 2,794.76 : x
  2. Step 2: Convert to fraction form
    4,890.62/6,749.14 = 2,794.76/x
  3. Step 3: Cross multiply
    4,890.62x = 6,749.14 × 2,794.76
  4. Step 4: Simplify right side
    4,890.62x = 18,862,226.51
  5. Step 5: Solve for x
    x = 18,862,226.51/4,890.62
  6. Step 6: Final answer
    x = 3,856.82

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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.