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Finding the Third Proportional to 474.75 and 985.50

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Solution

The third proportional to 474.75 and 985.50 is: 2,045.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    474.75 : 985.50 = 985.50 : x
  2. Step 2: Convert to fraction form
    474.75/985.50 = 985.50/x
  3. Step 3: Cross multiply
    474.75x = 985.50 × 985.50
  4. Step 4: Simplify right side
    474.75x = 971,210.25
  5. Step 5: Solve for x
    x = 971,210.25/474.75
  6. Step 6: Final answer
    x = 2,045.73

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.