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Finding the Fourth Proportional to 3,305.28, 4,957.13 and 964.65

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Solution

The fourth proportional to 3,305.28, 4,957.13 and 964.65 is: 1,446.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,305.28 : 4,957.13 = 964.65 : x
  2. Step 2: Convert to fraction form
    3,305.28/4,957.13 = 964.65/x
  3. Step 3: Cross multiply
    3,305.28x = 4,957.13 × 964.65
  4. Step 4: Simplify right side
    3,305.28x = 4,781,890.63
  5. Step 5: Solve for x
    x = 4,781,890.63/3,305.28
  6. Step 6: Final answer
    x = 1,446.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.