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Finding the Fourth Proportional to 13,446.41, 18,556.06 and 7,478.07

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Solution

The fourth proportional to 13,446.41, 18,556.06 and 7,478.07 is: 10,319.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,446.41 : 18,556.06 = 7,478.07 : x
  2. Step 2: Convert to fraction form
    13,446.41/18,556.06 = 7,478.07/x
  3. Step 3: Cross multiply
    13,446.41x = 18,556.06 × 7,478.07
  4. Step 4: Simplify right side
    13,446.41x = 138,763,566.49
  5. Step 5: Solve for x
    x = 138,763,566.49/13,446.41
  6. Step 6: Final answer
    x = 10,319.75

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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.