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Finding the Fourth Proportional to 104,615.40, 156,923.10 and 73,122.60

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Solution

The fourth proportional to 104,615.40, 156,923.10 and 73,122.60 is: 109,683.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,615.40 : 156,923.10 = 73,122.60 : x
  2. Step 2: Convert to fraction form
    104,615.40/156,923.10 = 73,122.60/x
  3. Step 3: Cross multiply
    104,615.40x = 156,923.10 × 73,122.60
  4. Step 4: Simplify right side
    104,615.40x = 11,474,625,072.06
  5. Step 5: Solve for x
    x = 11,474,625,072.06/104,615.40
  6. Step 6: Final answer
    x = 109,683.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.