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Finding the Third Proportional to 478 and 932.50

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Solution

The third proportional to 478 and 932.50 is: 1,819.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    478 : 932.50 = 932.50 : x
  2. Step 2: Convert to fraction form
    478/932.50 = 932.50/x
  3. Step 3: Cross multiply
    478x = 932.50 × 932.50
  4. Step 4: Simplify right side
    478x = 869,556.25
  5. Step 5: Solve for x
    x = 869,556.25/478
  6. Step 6: Final answer
    x = 1,819.16

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Why These Related Problems?

These problems maintain the same ratio (1.95) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.