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Finding the Fourth Proportional to 13,761.07, 18,990.38 and 7,473.44

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Solution

The fourth proportional to 13,761.07, 18,990.38 and 7,473.44 is: 10,313.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,761.07 : 18,990.38 = 7,473.44 : x
  2. Step 2: Convert to fraction form
    13,761.07/18,990.38 = 7,473.44/x
  3. Step 3: Cross multiply
    13,761.07x = 18,990.38 × 7,473.44
  4. Step 4: Simplify right side
    13,761.07x = 141,923,465.51
  5. Step 5: Solve for x
    x = 141,923,465.51/13,761.07
  6. Step 6: Final answer
    x = 10,313.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.