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Finding the Fourth Proportional to 1,063.88, 1,467.66 and 671.12

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Solution

The fourth proportional to 1,063.88, 1,467.66 and 671.12 is: 925.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,063.88 : 1,467.66 = 671.12 : x
  2. Step 2: Convert to fraction form
    1,063.88/1,467.66 = 671.12/x
  3. Step 3: Cross multiply
    1,063.88x = 1,467.66 × 671.12
  4. Step 4: Simplify right side
    1,063.88x = 984,975.98
  5. Step 5: Solve for x
    x = 984,975.98/1,063.88
  6. Step 6: Final answer
    x = 925.83

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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.