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Finding the Fourth Proportional to 18,436.68, 25,432.92 and 12,470.37

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Solution

The fourth proportional to 18,436.68, 25,432.92 and 12,470.37 is: 17,202.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,436.68 : 25,432.92 = 12,470.37 : x
  2. Step 2: Convert to fraction form
    18,436.68/25,432.92 = 12,470.37/x
  3. Step 3: Cross multiply
    18,436.68x = 25,432.92 × 12,470.37
  4. Step 4: Simplify right side
    18,436.68x = 317,157,922.58
  5. Step 5: Solve for x
    x = 317,157,922.58/18,436.68
  6. Step 6: Final answer
    x = 17,202.55

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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.