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Finding the Fourth Proportional to 955.26, 1,318.17 and 535.62

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Solution

The fourth proportional to 955.26, 1,318.17 and 535.62 is: 739.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    955.26 : 1,318.17 = 535.62 : x
  2. Step 2: Convert to fraction form
    955.26/1,318.17 = 535.62/x
  3. Step 3: Cross multiply
    955.26x = 1,318.17 × 535.62
  4. Step 4: Simplify right side
    955.26x = 706,038.22
  5. Step 5: Solve for x
    x = 706,038.22/955.26
  6. Step 6: Final answer
    x = 739.11

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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.