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Finding the Third Proportional to 25,720 and 56,117

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Solution

The third proportional to 25,720 and 56,117 is: 122,438.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,720 : 56,117 = 56,117 : x
  2. Step 2: Convert to fraction form
    25,720/56,117 = 56,117/x
  3. Step 3: Cross multiply
    25,720x = 56,117 × 56,117
  4. Step 4: Simplify right side
    25,720x = 3,149,117,689
  5. Step 5: Solve for x
    x = 3,149,117,689/25,720
  6. Step 6: Final answer
    x = 122,438.48

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.