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Finding the Fourth Proportional to 2,654.94, 3,982.02 and 707.28

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Solution

The fourth proportional to 2,654.94, 3,982.02 and 707.28 is: 1,060.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,654.94 : 3,982.02 = 707.28 : x
  2. Step 2: Convert to fraction form
    2,654.94/3,982.02 = 707.28/x
  3. Step 3: Cross multiply
    2,654.94x = 3,982.02 × 707.28
  4. Step 4: Simplify right side
    2,654.94x = 2,816,403.11
  5. Step 5: Solve for x
    x = 2,816,403.11/2,654.94
  6. Step 6: Final answer
    x = 1,060.82

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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.