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Finding the Third Proportional to 528 and 1,346

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Solution

The third proportional to 528 and 1,346 is: 3,431.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    528 : 1,346 = 1,346 : x
  2. Step 2: Convert to fraction form
    528/1,346 = 1,346/x
  3. Step 3: Cross multiply
    528x = 1,346 × 1,346
  4. Step 4: Simplify right side
    528x = 1,811,716
  5. Step 5: Solve for x
    x = 1,811,716/528
  6. Step 6: Final answer
    x = 3,431.28

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Why These Related Problems?

These problems maintain the same ratio (2.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.