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Finding the Third Proportional to 156,985 and 201,579

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Solution

The third proportional to 156,985 and 201,579 is: 258,840.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,985 : 201,579 = 201,579 : x
  2. Step 2: Convert to fraction form
    156,985/201,579 = 201,579/x
  3. Step 3: Cross multiply
    156,985x = 201,579 × 201,579
  4. Step 4: Simplify right side
    156,985x = 40,634,093,241
  5. Step 5: Solve for x
    x = 40,634,093,241/156,985
  6. Step 6: Final answer
    x = 258,840.61

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Why These Related Problems?

These problems maintain the same ratio (1.28) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.