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Finding the Fourth Proportional to 13,164.16, 18,164.48 and 7,574.08

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Solution

The fourth proportional to 13,164.16, 18,164.48 and 7,574.08 is: 10,451.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,164.16 : 18,164.48 = 7,574.08 : x
  2. Step 2: Convert to fraction form
    13,164.16/18,164.48 = 7,574.08/x
  3. Step 3: Cross multiply
    13,164.16x = 18,164.48 × 7,574.08
  4. Step 4: Simplify right side
    13,164.16x = 137,579,224.68
  5. Step 5: Solve for x
    x = 137,579,224.68/13,164.16
  6. Step 6: Final answer
    x = 10,451.04

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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.