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Finding the Fourth Proportional to 56,638.80, 84,936.60 and 17,182.80

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Solution

The fourth proportional to 56,638.80, 84,936.60 and 17,182.80 is: 25,767.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,638.80 : 84,936.60 = 17,182.80 : x
  2. Step 2: Convert to fraction form
    56,638.80/84,936.60 = 17,182.80/x
  3. Step 3: Cross multiply
    56,638.80x = 84,936.60 × 17,182.80
  4. Step 4: Simplify right side
    56,638.80x = 1,459,448,610.48
  5. Step 5: Solve for x
    x = 1,459,448,610.48/56,638.80
  6. Step 6: Final answer
    x = 25,767.65

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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.