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Finding the Fourth Proportional to 13,133.43, 18,121.95 and 7,826.31

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Solution

The fourth proportional to 13,133.43, 18,121.95 and 7,826.31 is: 10,799.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,133.43 : 18,121.95 = 7,826.31 : x
  2. Step 2: Convert to fraction form
    13,133.43/18,121.95 = 7,826.31/x
  3. Step 3: Cross multiply
    13,133.43x = 18,121.95 × 7,826.31
  4. Step 4: Simplify right side
    13,133.43x = 141,827,998.50
  5. Step 5: Solve for x
    x = 141,827,998.50/13,133.43
  6. Step 6: Final answer
    x = 10,799.01

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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.