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Finding the Fourth Proportional to 85,198.88, 127,876.98 and 43,108.58

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Solution

The fourth proportional to 85,198.88, 127,876.98 and 43,108.58 is: 64,702.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,198.88 : 127,876.98 = 43,108.58 : x
  2. Step 2: Convert to fraction form
    85,198.88/127,876.98 = 43,108.58/x
  3. Step 3: Cross multiply
    85,198.88x = 127,876.98 × 43,108.58
  4. Step 4: Simplify right side
    85,198.88x = 5,512,595,022.49
  5. Step 5: Solve for x
    x = 5,512,595,022.49/85,198.88
  6. Step 6: Final answer
    x = 64,702.67

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1.5x scale

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.