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Finding the Fourth Proportional to 31,173.60, 43,020.60 and 17,027.76

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Solution

The fourth proportional to 31,173.60, 43,020.60 and 17,027.76 is: 23,498.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,173.60 : 43,020.60 = 17,027.76 : x
  2. Step 2: Convert to fraction form
    31,173.60/43,020.60 = 17,027.76/x
  3. Step 3: Cross multiply
    31,173.60x = 43,020.60 × 17,027.76
  4. Step 4: Simplify right side
    31,173.60x = 732,544,451.86
  5. Step 5: Solve for x
    x = 732,544,451.86/31,173.60
  6. Step 6: Final answer
    x = 23,498.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.