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Finding the Fourth Proportional to 99,794.10, 149,691.15 and 89,952.60

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Solution

The fourth proportional to 99,794.10, 149,691.15 and 89,952.60 is: 134,928.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,794.10 : 149,691.15 = 89,952.60 : x
  2. Step 2: Convert to fraction form
    99,794.10/149,691.15 = 89,952.60/x
  3. Step 3: Cross multiply
    99,794.10x = 149,691.15 × 89,952.60
  4. Step 4: Simplify right side
    99,794.10x = 13,465,108,139.49
  5. Step 5: Solve for x
    x = 13,465,108,139.49/99,794.10
  6. Step 6: Final answer
    x = 134,928.90

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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.