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Finding the Fourth Proportional to 13,072.74, 18,040.61 and 7,407.35

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Solution

The fourth proportional to 13,072.74, 18,040.61 and 7,407.35 is: 10,222.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,072.74 : 18,040.61 = 7,407.35 : x
  2. Step 2: Convert to fraction form
    13,072.74/18,040.61 = 7,407.35/x
  3. Step 3: Cross multiply
    13,072.74x = 18,040.61 × 7,407.35
  4. Step 4: Simplify right side
    13,072.74x = 133,632,985.24
  5. Step 5: Solve for x
    x = 133,632,985.24/13,072.74
  6. Step 6: Final answer
    x = 10,222.27

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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.