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Finding the Third Proportional to 23,987 and 36,315

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Solution

The third proportional to 23,987 and 36,315 is: 54,978.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,987 : 36,315 = 36,315 : x
  2. Step 2: Convert to fraction form
    23,987/36,315 = 36,315/x
  3. Step 3: Cross multiply
    23,987x = 36,315 × 36,315
  4. Step 4: Simplify right side
    23,987x = 1,318,779,225
  5. Step 5: Solve for x
    x = 1,318,779,225/23,987
  6. Step 6: Final answer
    x = 54,978.91

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.