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Finding the Fourth Proportional to 958, 1,322.22 and 544

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Solution

The fourth proportional to 958, 1,322.22 and 544 is: 750.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    958 : 1,322.22 = 544 : x
  2. Step 2: Convert to fraction form
    958/1,322.22 = 544/x
  3. Step 3: Cross multiply
    958x = 1,322.22 × 544
  4. Step 4: Simplify right side
    958x = 719,287.68
  5. Step 5: Solve for x
    x = 719,287.68/958
  6. Step 6: Final answer
    x = 750.82

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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.