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Finding the Fourth Proportional to 56,939.60, 85,409.40 and 17,496.80

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Solution

The fourth proportional to 56,939.60, 85,409.40 and 17,496.80 is: 26,245.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,939.60 : 85,409.40 = 17,496.80 : x
  2. Step 2: Convert to fraction form
    56,939.60/85,409.40 = 17,496.80/x
  3. Step 3: Cross multiply
    56,939.60x = 85,409.40 × 17,496.80
  4. Step 4: Simplify right side
    56,939.60x = 1,494,391,189.92
  5. Step 5: Solve for x
    x = 1,494,391,189.92/56,939.60
  6. Step 6: Final answer
    x = 26,245.20

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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.