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Finding the Fourth Proportional to 2,655.01, 3,982.61 and 707.22

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Solution

The fourth proportional to 2,655.01, 3,982.61 and 707.22 is: 1,060.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,655.01 : 3,982.61 = 707.22 : x
  2. Step 2: Convert to fraction form
    2,655.01/3,982.61 = 707.22/x
  3. Step 3: Cross multiply
    2,655.01x = 3,982.61 × 707.22
  4. Step 4: Simplify right side
    2,655.01x = 2,816,581.44
  5. Step 5: Solve for x
    x = 2,816,581.44/2,655.01
  6. Step 6: Final answer
    x = 1,060.86

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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.