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Finding the Fourth Proportional to 123,087.70, 184,977.78 and 73,176.67

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Solution

The fourth proportional to 123,087.70, 184,977.78 and 73,176.67 is: 109,970.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,087.70 : 184,977.78 = 73,176.67 : x
  2. Step 2: Convert to fraction form
    123,087.70/184,977.78 = 73,176.67/x
  3. Step 3: Cross multiply
    123,087.70x = 184,977.78 × 73,176.67
  4. Step 4: Simplify right side
    123,087.70x = 13,536,057,964.39
  5. Step 5: Solve for x
    x = 13,536,057,964.39/123,087.70
  6. Step 6: Final answer
    x = 109,970.84

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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.