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Finding the Fourth Proportional to 2,864.56, 3,950.76 and 1,932.88

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Solution

The fourth proportional to 2,864.56, 3,950.76 and 1,932.88 is: 2,665.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,864.56 : 3,950.76 = 1,932.88 : x
  2. Step 2: Convert to fraction form
    2,864.56/3,950.76 = 1,932.88/x
  3. Step 3: Cross multiply
    2,864.56x = 3,950.76 × 1,932.88
  4. Step 4: Simplify right side
    2,864.56x = 7,636,344.99
  5. Step 5: Solve for x
    x = 7,636,344.99/2,864.56
  6. Step 6: Final answer
    x = 2,665.80

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Half 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.