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Finding the Fourth Proportional to 91,731.44, 126,472.21 and 59,408.97

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Solution

The fourth proportional to 91,731.44, 126,472.21 and 59,408.97 is: 81,908.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,731.44 : 126,472.21 = 59,408.97 : x
  2. Step 2: Convert to fraction form
    91,731.44/126,472.21 = 59,408.97/x
  3. Step 3: Cross multiply
    91,731.44x = 126,472.21 × 59,408.97
  4. Step 4: Simplify right side
    91,731.44x = 7,513,583,729.72
  5. Step 5: Solve for x
    x = 7,513,583,729.72/91,731.44
  6. Step 6: Final answer
    x = 81,908.49

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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.