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Finding the Fourth Proportional to 203,178.54, 280,385.60 and 117,136.92

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Solution

The fourth proportional to 203,178.54, 280,385.60 and 117,136.92 is: 161,648.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,178.54 : 280,385.60 = 117,136.92 : x
  2. Step 2: Convert to fraction form
    203,178.54/280,385.60 = 117,136.92/x
  3. Step 3: Cross multiply
    203,178.54x = 280,385.60 × 117,136.92
  4. Step 4: Simplify right side
    203,178.54x = 32,843,505,596.35
  5. Step 5: Solve for x
    x = 32,843,505,596.35/203,178.54
  6. Step 6: Final answer
    x = 161,648.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.