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Finding the Fourth Proportional to 14,393.54, 19,865.88 and 8,105.96

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Solution

The fourth proportional to 14,393.54, 19,865.88 and 8,105.96 is: 11,187.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,393.54 : 19,865.88 = 8,105.96 : x
  2. Step 2: Convert to fraction form
    14,393.54/19,865.88 = 8,105.96/x
  3. Step 3: Cross multiply
    14,393.54x = 19,865.88 × 8,105.96
  4. Step 4: Simplify right side
    14,393.54x = 161,032,028.64
  5. Step 5: Solve for x
    x = 161,032,028.64/14,393.54
  6. Step 6: Final answer
    x = 11,187.80

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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.