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Finding the Fourth Proportional to 80,299.44, 120,492.90 and 48,631.68

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Solution

The fourth proportional to 80,299.44, 120,492.90 and 48,631.68 is: 72,974.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,299.44 : 120,492.90 = 48,631.68 : x
  2. Step 2: Convert to fraction form
    80,299.44/120,492.90 = 48,631.68/x
  3. Step 3: Cross multiply
    80,299.44x = 120,492.90 × 48,631.68
  4. Step 4: Simplify right side
    80,299.44x = 5,859,772,155.07
  5. Step 5: Solve for x
    x = 5,859,772,155.07/80,299.44
  6. Step 6: Final answer
    x = 72,974.01

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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.