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Finding the Fourth Proportional to 99,226.70, 148,475.55 and 72,982.70

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Solution

The fourth proportional to 99,226.70, 148,475.55 and 72,982.70 is: 109,205.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,226.70 : 148,475.55 = 72,982.70 : x
  2. Step 2: Convert to fraction form
    99,226.70/148,475.55 = 72,982.70/x
  3. Step 3: Cross multiply
    99,226.70x = 148,475.55 × 72,982.70
  4. Step 4: Simplify right side
    99,226.70x = 10,836,146,522.99
  5. Step 5: Solve for x
    x = 10,836,146,522.99/99,226.70
  6. Step 6: Final answer
    x = 109,205.95

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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.