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Finding the Fourth Proportional to 91,882.20, 126,817.20 and 56,064.54

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Solution

The fourth proportional to 91,882.20, 126,817.20 and 56,064.54 is: 77,381.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,882.20 : 126,817.20 = 56,064.54 : x
  2. Step 2: Convert to fraction form
    91,882.20/126,817.20 = 56,064.54/x
  3. Step 3: Cross multiply
    91,882.20x = 126,817.20 × 56,064.54
  4. Step 4: Simplify right side
    91,882.20x = 7,109,947,982.09
  5. Step 5: Solve for x
    x = 7,109,947,982.09/91,882.20
  6. Step 6: Final answer
    x = 77,381.12

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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.