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Finding the Third Proportional to 1,480 and 1,712

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Solution

The third proportional to 1,480 and 1,712 is: 1,980.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,480 : 1,712 = 1,712 : x
  2. Step 2: Convert to fraction form
    1,480/1,712 = 1,712/x
  3. Step 3: Cross multiply
    1,480x = 1,712 × 1,712
  4. Step 4: Simplify right side
    1,480x = 2,930,944
  5. Step 5: Solve for x
    x = 2,930,944/1,480
  6. Step 6: Final answer
    x = 1,980.37

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Why These Related Problems?

These problems maintain the same ratio (1.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.