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Finding the Fourth Proportional to 16,921.40, 25,382.10 and 4,609.40

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Solution

The fourth proportional to 16,921.40, 25,382.10 and 4,609.40 is: 6,914.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,921.40 : 25,382.10 = 4,609.40 : x
  2. Step 2: Convert to fraction form
    16,921.40/25,382.10 = 4,609.40/x
  3. Step 3: Cross multiply
    16,921.40x = 25,382.10 × 4,609.40
  4. Step 4: Simplify right side
    16,921.40x = 116,996,251.74
  5. Step 5: Solve for x
    x = 116,996,251.74/16,921.40
  6. Step 6: Final answer
    x = 6,914.10

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.