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Finding the Fourth Proportional to 3,573.68, 4,930.79 and 2,080.69

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Solution

The fourth proportional to 3,573.68, 4,930.79 and 2,080.69 is: 2,870.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,573.68 : 4,930.79 = 2,080.69 : x
  2. Step 2: Convert to fraction form
    3,573.68/4,930.79 = 2,080.69/x
  3. Step 3: Cross multiply
    3,573.68x = 4,930.79 × 2,080.69
  4. Step 4: Simplify right side
    3,573.68x = 10,259,422.71
  5. Step 5: Solve for x
    x = 10,259,422.71/3,573.68
  6. Step 6: Final answer
    x = 2,870.83

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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.