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Finding the Third Proportional to 528 and 792.19

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Solution

The third proportional to 528 and 792.19 is: 1,188.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    528 : 792.19 = 792.19 : x
  2. Step 2: Convert to fraction form
    528/792.19 = 792.19/x
  3. Step 3: Cross multiply
    528x = 792.19 × 792.19
  4. Step 4: Simplify right side
    528x = 627,561.04
  5. Step 5: Solve for x
    x = 627,561.04/528
  6. Step 6: Final answer
    x = 1,188.56

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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.