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Finding the Fourth Proportional to 18,609.89, 25,683.89 and 10,654.68

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Solution

The fourth proportional to 18,609.89, 25,683.89 and 10,654.68 is: 14,704.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,609.89 : 25,683.89 = 10,654.68 : x
  2. Step 2: Convert to fraction form
    18,609.89/25,683.89 = 10,654.68/x
  3. Step 3: Cross multiply
    18,609.89x = 25,683.89 × 10,654.68
  4. Step 4: Simplify right side
    18,609.89x = 273,653,575.83
  5. Step 5: Solve for x
    x = 273,653,575.83/18,609.89
  6. Step 6: Final answer
    x = 14,704.74

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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.