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Finding the Fourth Proportional to 13,296.51, 18,349.31 and 7,328.40

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Solution

The fourth proportional to 13,296.51, 18,349.31 and 7,328.40 is: 10,113.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,296.51 : 18,349.31 = 7,328.40 : x
  2. Step 2: Convert to fraction form
    13,296.51/18,349.31 = 7,328.40/x
  3. Step 3: Cross multiply
    13,296.51x = 18,349.31 × 7,328.40
  4. Step 4: Simplify right side
    13,296.51x = 134,471,083.40
  5. Step 5: Solve for x
    x = 134,471,083.40/13,296.51
  6. Step 6: Final answer
    x = 10,113.26

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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.