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Finding the Fourth Proportional to 13,410.08, 20,115.04 and 7,292.96

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Solution

The fourth proportional to 13,410.08, 20,115.04 and 7,292.96 is: 10,939.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,410.08 : 20,115.04 = 7,292.96 : x
  2. Step 2: Convert to fraction form
    13,410.08/20,115.04 = 7,292.96/x
  3. Step 3: Cross multiply
    13,410.08x = 20,115.04 × 7,292.96
  4. Step 4: Simplify right side
    13,410.08x = 146,698,182.12
  5. Step 5: Solve for x
    x = 146,698,182.12/13,410.08
  6. Step 6: Final answer
    x = 10,939.40

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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.