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Finding the Fourth Proportional to 13,351.68, 18,426.96 and 7,762.68

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Solution

The fourth proportional to 13,351.68, 18,426.96 and 7,762.68 is: 10,713.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,351.68 : 18,426.96 = 7,762.68 : x
  2. Step 2: Convert to fraction form
    13,351.68/18,426.96 = 7,762.68/x
  3. Step 3: Cross multiply
    13,351.68x = 18,426.96 × 7,762.68
  4. Step 4: Simplify right side
    13,351.68x = 143,042,593.85
  5. Step 5: Solve for x
    x = 143,042,593.85/13,351.68
  6. Step 6: Final answer
    x = 10,713.45

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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.