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Finding the Fourth Proportional to 113,294.80, 169,942.20 and 73,928.80

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Solution

The fourth proportional to 113,294.80, 169,942.20 and 73,928.80 is: 110,893.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,294.80 : 169,942.20 = 73,928.80 : x
  2. Step 2: Convert to fraction form
    113,294.80/169,942.20 = 73,928.80/x
  3. Step 3: Cross multiply
    113,294.80x = 169,942.20 × 73,928.80
  4. Step 4: Simplify right side
    113,294.80x = 12,563,622,915.36
  5. Step 5: Solve for x
    x = 12,563,622,915.36/113,294.80
  6. Step 6: Final answer
    x = 110,893.20

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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.