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Finding the Fourth Proportional to 89,900.62, 134,872.88 and 29,928.98

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Solution

The fourth proportional to 89,900.62, 134,872.88 and 29,928.98 is: 44,900.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,900.62 : 134,872.88 = 29,928.98 : x
  2. Step 2: Convert to fraction form
    89,900.62/134,872.88 = 29,928.98/x
  3. Step 3: Cross multiply
    89,900.62x = 134,872.88 × 29,928.98
  4. Step 4: Simplify right side
    89,900.62x = 4,036,607,728.06
  5. Step 5: Solve for x
    x = 4,036,607,728.06/89,900.62
  6. Step 6: Final answer
    x = 44,900.78

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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.