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Finding the Third Proportional to 474 and 871.50

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Solution

The third proportional to 474 and 871.50 is: 1,602.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    474 : 871.50 = 871.50 : x
  2. Step 2: Convert to fraction form
    474/871.50 = 871.50/x
  3. Step 3: Cross multiply
    474x = 871.50 × 871.50
  4. Step 4: Simplify right side
    474x = 759,512.25
  5. Step 5: Solve for x
    x = 759,512.25/474
  6. Step 6: Final answer
    x = 1,602.35

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Why These Related Problems?

These problems maintain the same ratio (1.84) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.