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Finding the Fourth Proportional to 13,309.85, 18,366.92 and 7,341.16

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Solution

The fourth proportional to 13,309.85, 18,366.92 and 7,341.16 is: 10,130.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,309.85 : 18,366.92 = 7,341.16 : x
  2. Step 2: Convert to fraction form
    13,309.85/18,366.92 = 7,341.16/x
  3. Step 3: Cross multiply
    13,309.85x = 18,366.92 × 7,341.16
  4. Step 4: Simplify right side
    13,309.85x = 134,834,415.80
  5. Step 5: Solve for x
    x = 134,834,415.80/13,309.85
  6. Step 6: Final answer
    x = 10,130.43

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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.