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Finding the Fourth Proportional to 18,322.61, 25,285.21 and 10,364.66

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Solution

The fourth proportional to 18,322.61, 25,285.21 and 10,364.66 is: 14,303.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,322.61 : 25,285.21 = 10,364.66 : x
  2. Step 2: Convert to fraction form
    18,322.61/25,285.21 = 10,364.66/x
  3. Step 3: Cross multiply
    18,322.61x = 25,285.21 × 10,364.66
  4. Step 4: Simplify right side
    18,322.61x = 262,072,604.68
  5. Step 5: Solve for x
    x = 262,072,604.68/18,322.61
  6. Step 6: Final answer
    x = 14,303.24

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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.