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Finding the Fourth Proportional to 12,150.73, 16,658.65 and 11,929.30

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Solution

The fourth proportional to 12,150.73, 16,658.65 and 11,929.30 is: 16,355.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,150.73 : 16,658.65 = 11,929.30 : x
  2. Step 2: Convert to fraction form
    12,150.73/16,658.65 = 11,929.30/x
  3. Step 3: Cross multiply
    12,150.73x = 16,658.65 × 11,929.30
  4. Step 4: Simplify right side
    12,150.73x = 198,726,033.45
  5. Step 5: Solve for x
    x = 198,726,033.45/12,150.73
  6. Step 6: Final answer
    x = 16,355.07

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Half scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.