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Finding the Third Proportional to 55,224 and 74,580

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Solution

The third proportional to 55,224 and 74,580 is: 100,720.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,224 : 74,580 = 74,580 : x
  2. Step 2: Convert to fraction form
    55,224/74,580 = 74,580/x
  3. Step 3: Cross multiply
    55,224x = 74,580 × 74,580
  4. Step 4: Simplify right side
    55,224x = 5,562,176,400
  5. Step 5: Solve for x
    x = 5,562,176,400/55,224
  6. Step 6: Final answer
    x = 100,720.27

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.