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Finding the Fourth Proportional to 196,909.30, 295,363.95 and 91,738.90

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Solution

The fourth proportional to 196,909.30, 295,363.95 and 91,738.90 is: 137,608.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,909.30 : 295,363.95 = 91,738.90 : x
  2. Step 2: Convert to fraction form
    196,909.30/295,363.95 = 91,738.90/x
  3. Step 3: Cross multiply
    196,909.30x = 295,363.95 × 91,738.90
  4. Step 4: Simplify right side
    196,909.30x = 27,096,363,872.66
  5. Step 5: Solve for x
    x = 27,096,363,872.66/196,909.30
  6. Step 6: Final answer
    x = 137,608.35

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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.