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Finding the Third Proportional to 25,428 and 53,760

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Solution

The third proportional to 25,428 and 53,760 is: 113,659.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,428 : 53,760 = 53,760 : x
  2. Step 2: Convert to fraction form
    25,428/53,760 = 53,760/x
  3. Step 3: Cross multiply
    25,428x = 53,760 × 53,760
  4. Step 4: Simplify right side
    25,428x = 2,890,137,600
  5. Step 5: Solve for x
    x = 2,890,137,600/25,428
  6. Step 6: Final answer
    x = 113,659.65

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.