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Finding the Fourth Proportional to 18,766.48, 25,898.12 and 10,383.12

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Solution

The fourth proportional to 18,766.48, 25,898.12 and 10,383.12 is: 14,328.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,766.48 : 25,898.12 = 10,383.12 : x
  2. Step 2: Convert to fraction form
    18,766.48/25,898.12 = 10,383.12/x
  3. Step 3: Cross multiply
    18,766.48x = 25,898.12 × 10,383.12
  4. Step 4: Simplify right side
    18,766.48x = 268,903,287.73
  5. Step 5: Solve for x
    x = 268,903,287.73/18,766.48
  6. Step 6: Final answer
    x = 14,328.91

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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.