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Finding the Fourth Proportional to 91,396.72, 126,090.36 and 59,554

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Solution

The fourth proportional to 91,396.72, 126,090.36 and 59,554 is: 82,160.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,396.72 : 126,090.36 = 59,554 : x
  2. Step 2: Convert to fraction form
    91,396.72/126,090.36 = 59,554/x
  3. Step 3: Cross multiply
    91,396.72x = 126,090.36 × 59,554
  4. Step 4: Simplify right side
    91,396.72x = 7,509,185,299.44
  5. Step 5: Solve for x
    x = 7,509,185,299.44/91,396.72
  6. Step 6: Final answer
    x = 82,160.34

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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.