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Finding the Fourth Proportional to 18,356.96, 25,327.92 and 10,398.08

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Solution

The fourth proportional to 18,356.96, 25,327.92 and 10,398.08 is: 14,346.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,356.96 : 25,327.92 = 10,398.08 : x
  2. Step 2: Convert to fraction form
    18,356.96/25,327.92 = 10,398.08/x
  3. Step 3: Cross multiply
    18,356.96x = 25,327.92 × 10,398.08
  4. Step 4: Simplify right side
    18,356.96x = 263,361,738.39
  5. Step 5: Solve for x
    x = 263,361,738.39/18,356.96
  6. Step 6: Final answer
    x = 14,346.70

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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.