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Finding the Third Proportional to 526 and 1,370

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Solution

The third proportional to 526 and 1,370 is: 3,568.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    526 : 1,370 = 1,370 : x
  2. Step 2: Convert to fraction form
    526/1,370 = 1,370/x
  3. Step 3: Cross multiply
    526x = 1,370 × 1,370
  4. Step 4: Simplify right side
    526x = 1,876,900
  5. Step 5: Solve for x
    x = 1,876,900/526
  6. Step 6: Final answer
    x = 3,568.25

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Why These Related Problems?

These problems maintain the same ratio (2.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.