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Finding the Fourth Proportional to 2,167.13, 3,250.70 and 706.40

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Solution

The fourth proportional to 2,167.13, 3,250.70 and 706.40 is: 1,059.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,167.13 : 3,250.70 = 706.40 : x
  2. Step 2: Convert to fraction form
    2,167.13/3,250.70 = 706.40/x
  3. Step 3: Cross multiply
    2,167.13x = 3,250.70 × 706.40
  4. Step 4: Simplify right side
    2,167.13x = 2,296,274.69
  5. Step 5: Solve for x
    x = 2,296,274.69/2,167.13
  6. Step 6: Final answer
    x = 1,059.59

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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.