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Finding the Fourth Proportional to 115,872.40, 173,646.60 and 92,220.40

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Solution

The fourth proportional to 115,872.40, 173,646.60 and 92,220.40 is: 138,201.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,872.40 : 173,646.60 = 92,220.40 : x
  2. Step 2: Convert to fraction form
    115,872.40/173,646.60 = 92,220.40/x
  3. Step 3: Cross multiply
    115,872.40x = 173,646.60 × 92,220.40
  4. Step 4: Simplify right side
    115,872.40x = 16,013,758,910.64
  5. Step 5: Solve for x
    x = 16,013,758,910.64/115,872.40
  6. Step 6: Final answer
    x = 138,201.67

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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.