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Finding the Fourth Proportional to 467, 700.38 and 142.28

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Solution

The fourth proportional to 467, 700.38 and 142.28 is: 213.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    467 : 700.38 = 142.28 : x
  2. Step 2: Convert to fraction form
    467/700.38 = 142.28/x
  3. Step 3: Cross multiply
    467x = 700.38 × 142.28
  4. Step 4: Simplify right side
    467x = 99,650.07
  5. Step 5: Solve for x
    x = 99,650.07/467
  6. Step 6: Final answer
    x = 213.38

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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.