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Finding the Fourth Proportional to 474, 710.72 and 165.84

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Solution

The fourth proportional to 474, 710.72 and 165.84 is: 248.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    474 : 710.72 = 165.84 : x
  2. Step 2: Convert to fraction form
    474/710.72 = 165.84/x
  3. Step 3: Cross multiply
    474x = 710.72 × 165.84
  4. Step 4: Simplify right side
    474x = 117,865.80
  5. Step 5: Solve for x
    x = 117,865.80/474
  6. Step 6: Final answer
    x = 248.66

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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.