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Finding the Fourth Proportional to 18,309.09, 25,267.03 and 10,352.51

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Solution

The fourth proportional to 18,309.09, 25,267.03 and 10,352.51 is: 14,286.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,309.09 : 25,267.03 = 10,352.51 : x
  2. Step 2: Convert to fraction form
    18,309.09/25,267.03 = 10,352.51/x
  3. Step 3: Cross multiply
    18,309.09x = 25,267.03 × 10,352.51
  4. Step 4: Simplify right side
    18,309.09x = 261,577,054.41
  5. Step 5: Solve for x
    x = 261,577,054.41/18,309.09
  6. Step 6: Final answer
    x = 14,286.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.