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Finding the Fourth Proportional to 169,390.64, 254,021.38 and 57,040.70

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Solution

The fourth proportional to 169,390.64, 254,021.38 and 57,040.70 is: 85,539.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,390.64 : 254,021.38 = 57,040.70 : x
  2. Step 2: Convert to fraction form
    169,390.64/254,021.38 = 57,040.70/x
  3. Step 3: Cross multiply
    169,390.64x = 254,021.38 × 57,040.70
  4. Step 4: Simplify right side
    169,390.64x = 14,489,555,917.46
  5. Step 5: Solve for x
    x = 14,489,555,917.46/169,390.64
  6. Step 6: Final answer
    x = 85,539.29

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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.