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Finding the Third Proportional to 478.72 and 732.01

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Solution

The third proportional to 478.72 and 732.01 is: 1,119.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    478.72 : 732.01 = 732.01 : x
  2. Step 2: Convert to fraction form
    478.72/732.01 = 732.01/x
  3. Step 3: Cross multiply
    478.72x = 732.01 × 732.01
  4. Step 4: Simplify right side
    478.72x = 535,832.58
  5. Step 5: Solve for x
    x = 535,832.58/478.72
  6. Step 6: Final answer
    x = 1,119.30

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.