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Finding the Fourth Proportional to 1,062.10, 1,591.13 and 622.27

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Solution

The fourth proportional to 1,062.10, 1,591.13 and 622.27 is: 932.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,062.10 : 1,591.13 = 622.27 : x
  2. Step 2: Convert to fraction form
    1,062.10/1,591.13 = 622.27/x
  3. Step 3: Cross multiply
    1,062.10x = 1,591.13 × 622.27
  4. Step 4: Simplify right side
    1,062.10x = 990,109.35
  5. Step 5: Solve for x
    x = 990,109.35/1,062.10
  6. Step 6: Final answer
    x = 932.22

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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.