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Finding the Fourth Proportional to 1,092.14, 1,507.20 and 626.48

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Solution

The fourth proportional to 1,092.14, 1,507.20 and 626.48 is: 864.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,092.14 : 1,507.20 = 626.48 : x
  2. Step 2: Convert to fraction form
    1,092.14/1,507.20 = 626.48/x
  3. Step 3: Cross multiply
    1,092.14x = 1,507.20 × 626.48
  4. Step 4: Simplify right side
    1,092.14x = 944,234.42
  5. Step 5: Solve for x
    x = 944,234.42/1,092.14
  6. Step 6: Final answer
    x = 864.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.