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Finding the Third Proportional to 56,186 and 84,120

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Solution

The third proportional to 56,186 and 84,120 is: 125,941.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,186 : 84,120 = 84,120 : x
  2. Step 2: Convert to fraction form
    56,186/84,120 = 84,120/x
  3. Step 3: Cross multiply
    56,186x = 84,120 × 84,120
  4. Step 4: Simplify right side
    56,186x = 7,076,174,400
  5. Step 5: Solve for x
    x = 7,076,174,400/56,186
  6. Step 6: Final answer
    x = 125,941.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.