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Finding the Fourth Proportional to 91,954.36, 126,910.74 and 56,164.96

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Solution

The fourth proportional to 91,954.36, 126,910.74 and 56,164.96 is: 77,516.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,954.36 : 126,910.74 = 56,164.96 : x
  2. Step 2: Convert to fraction form
    91,954.36/126,910.74 = 56,164.96/x
  3. Step 3: Cross multiply
    91,954.36x = 126,910.74 × 56,164.96
  4. Step 4: Simplify right side
    91,954.36x = 7,127,936,635.67
  5. Step 5: Solve for x
    x = 7,127,936,635.67/91,954.36
  6. Step 6: Final answer
    x = 77,516.03

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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.