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Finding the Fourth Proportional to 99,344.80, 149,017.20 and 92,735.20

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Solution

The fourth proportional to 99,344.80, 149,017.20 and 92,735.20 is: 139,102.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,344.80 : 149,017.20 = 92,735.20 : x
  2. Step 2: Convert to fraction form
    99,344.80/149,017.20 = 92,735.20/x
  3. Step 3: Cross multiply
    99,344.80x = 149,017.20 × 92,735.20
  4. Step 4: Simplify right side
    99,344.80x = 13,819,139,845.44
  5. Step 5: Solve for x
    x = 13,819,139,845.44/99,344.80
  6. Step 6: Final answer
    x = 139,102.80

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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.