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Finding the Fourth Proportional to 18,818.31, 25,973.32 and 11,266.33

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Solution

The fourth proportional to 18,818.31, 25,973.32 and 11,266.33 is: 15,549.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,818.31 : 25,973.32 = 11,266.33 : x
  2. Step 2: Convert to fraction form
    18,818.31/25,973.32 = 11,266.33/x
  3. Step 3: Cross multiply
    18,818.31x = 25,973.32 × 11,266.33
  4. Step 4: Simplify right side
    18,818.31x = 292,623,994.32
  5. Step 5: Solve for x
    x = 292,623,994.32/18,818.31
  6. Step 6: Final answer
    x = 15,549.96

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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.