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Finding the Third Proportional to 35,808 and 77,760

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Solution

The third proportional to 35,808 and 77,760 is: 168,862.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,808 : 77,760 = 77,760 : x
  2. Step 2: Convert to fraction form
    35,808/77,760 = 77,760/x
  3. Step 3: Cross multiply
    35,808x = 77,760 × 77,760
  4. Step 4: Simplify right side
    35,808x = 6,046,617,600
  5. Step 5: Solve for x
    x = 6,046,617,600/35,808
  6. Step 6: Final answer
    x = 168,862.20

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.