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Finding the Fourth Proportional to 14,638.50, 20,202.72 and 9,606.78

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Solution

The fourth proportional to 14,638.50, 20,202.72 and 9,606.78 is: 13,258.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,638.50 : 20,202.72 = 9,606.78 : x
  2. Step 2: Convert to fraction form
    14,638.50/20,202.72 = 9,606.78/x
  3. Step 3: Cross multiply
    14,638.50x = 20,202.72 × 9,606.78
  4. Step 4: Simplify right side
    14,638.50x = 194,083,086.44
  5. Step 5: Solve for x
    x = 194,083,086.44/14,638.50
  6. Step 6: Final answer
    x = 13,258.40

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.