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Finding the Fourth Proportional to 13,325.99, 18,389.57 and 7,357.91

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Solution

The fourth proportional to 13,325.99, 18,389.57 and 7,357.91 is: 10,153.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,325.99 : 18,389.57 = 7,357.91 : x
  2. Step 2: Convert to fraction form
    13,325.99/18,389.57 = 7,357.91/x
  3. Step 3: Cross multiply
    13,325.99x = 18,389.57 × 7,357.91
  4. Step 4: Simplify right side
    13,325.99x = 135,308,672.26
  5. Step 5: Solve for x
    x = 135,308,672.26/13,325.99
  6. Step 6: Final answer
    x = 10,153.75

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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.