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Finding the Fourth Proportional to 91,104.68, 125,724.65 and 50,817.41

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Solution

The fourth proportional to 91,104.68, 125,724.65 and 50,817.41 is: 70,128.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,104.68 : 125,724.65 = 50,817.41 : x
  2. Step 2: Convert to fraction form
    91,104.68/125,724.65 = 50,817.41/x
  3. Step 3: Cross multiply
    91,104.68x = 125,724.65 × 50,817.41
  4. Step 4: Simplify right side
    91,104.68x = 6,389,000,584.58
  5. Step 5: Solve for x
    x = 6,389,000,584.58/91,104.68
  6. Step 6: Final answer
    x = 70,128.13

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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.