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Finding the Fourth Proportional to 91,057.42, 125,679.41 and 59,170.96

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Solution

The fourth proportional to 91,057.42, 125,679.41 and 59,170.96 is: 81,669.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,057.42 : 125,679.41 = 59,170.96 : x
  2. Step 2: Convert to fraction form
    91,057.42/125,679.41 = 59,170.96/x
  3. Step 3: Cross multiply
    91,057.42x = 125,679.41 × 59,170.96
  4. Step 4: Simplify right side
    91,057.42x = 7,436,571,341.93
  5. Step 5: Solve for x
    x = 7,436,571,341.93/91,057.42
  6. Step 6: Final answer
    x = 81,669.03

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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.