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Finding the Fourth Proportional to 18,753.85, 25,885.89 and 10,801.69

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Solution

The fourth proportional to 18,753.85, 25,885.89 and 10,801.69 is: 14,909.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,753.85 : 25,885.89 = 10,801.69 : x
  2. Step 2: Convert to fraction form
    18,753.85/25,885.89 = 10,801.69/x
  3. Step 3: Cross multiply
    18,753.85x = 25,885.89 × 10,801.69
  4. Step 4: Simplify right side
    18,753.85x = 279,611,359.15
  5. Step 5: Solve for x
    x = 279,611,359.15/18,753.85
  6. Step 6: Final answer
    x = 14,909.54

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Half scale
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Double scale
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Similar ratio
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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.